diff --git a/src/__tests__/autocapture.js b/src/__tests__/autocapture.js
index b8ef31643..5e5d6c9b9 100644
--- a/src/__tests__/autocapture.js
+++ b/src/__tests__/autocapture.js
@@ -474,14 +474,10 @@ describe('Autocapture system', () => {
                     return 'distinctid'
                 },
                 capture: sandbox.spy(),
-                get_config: sandbox.spy(function (key) {
-                    switch (key) {
-                        case 'mask_all_element_attributes':
-                            return false
-                        case 'rageclick':
-                            return true
-                    }
-                }),
+                config: {
+                    mask_all_element_attributes: false,
+                    rageclick: true,
+                },
             }
         })
 
@@ -506,18 +502,12 @@ describe('Autocapture system', () => {
         it('should add the custom property when an element matching any of the event selectors is clicked', () => {
             lib = {
                 _prepare_callback: sandbox.spy((callback) => callback),
-                get_config: sandbox.spy(function (key) {
-                    switch (key) {
-                        case 'api_host':
-                            return 'https://test.com'
-                        case 'token':
-                            return 'testtoken'
-                        case 'mask_all_element_attributes':
-                            return false
-                        case 'autocapture':
-                            return true
-                    }
-                }),
+                config: {
+                    api_host: 'https://test.com',
+                    token: 'testtoken',
+                    mask_all_element_attributes: false,
+                    autocapture: true,
+                },
                 token: 'testtoken',
                 capture: sandbox.spy(),
                 get_distinct_id() {
@@ -614,21 +604,15 @@ describe('Autocapture system', () => {
             expect(captureProperties).toHaveProperty('parent-augment', 'the parent')
         })
 
-        it('should not capture events when get_config returns false, when an element matching any of the event selectors is clicked', () => {
+        it('should not capture events when config returns false, when an element matching any of the event selectors is clicked', () => {
             lib = {
                 _prepare_callback: sandbox.spy((callback) => callback),
-                get_config: sandbox.spy(function (key) {
-                    switch (key) {
-                        case 'api_host':
-                            return 'https://test.com'
-                        case 'token':
-                            return 'testtoken'
-                        case 'mask_all_element_attributes':
-                            return false
-                        case 'autocapture':
-                            return false
-                    }
-                }),
+                config: {
+                    api_host: 'https://test.com',
+                    token: 'testtoken',
+                    mask_all_element_attributes: false,
+                    autocapture: false,
+                },
                 token: 'testtoken',
                 capture: sandbox.spy(),
                 get_distinct_id() {
@@ -666,21 +650,15 @@ describe('Autocapture system', () => {
             lib.capture.resetHistory()
         })
 
-        it('should not capture events when get_config returns true but server setting is disabled', () => {
+        it('should not capture events when config returns true but server setting is disabled', () => {
             lib = {
                 _prepare_callback: sandbox.spy((callback) => callback),
-                get_config: sandbox.spy(function (key) {
-                    switch (key) {
-                        case 'api_host':
-                            return 'https://test.com'
-                        case 'token':
-                            return 'testtoken'
-                        case 'mask_all_element_attributes':
-                            return false
-                        case 'autocapture':
-                            return true
-                    }
-                }),
+                config: {
+                    api_host: 'https://test.com',
+                    token: 'testtoken',
+                    mask_all_element_attributes: false,
+                    autocapture: true,
+                },
                 token: 'testtoken',
                 capture: sandbox.spy(),
                 get_distinct_id() {
@@ -1035,7 +1013,13 @@ describe('Autocapture system', () => {
       </button>
       `
 
-            const newLib = { ...lib, get_config: jest.fn(() => true) }
+            const newLib = {
+                ...lib,
+                config: {
+                    ...lib.config,
+                    mask_all_element_attributes: true,
+                },
+            }
 
             document.body.innerHTML = dom
             const button1 = document.getElementById('button1')
@@ -1057,7 +1041,13 @@ describe('Autocapture system', () => {
         </a>
         `
 
-            const newLib = { ...lib, get_config: jest.fn(() => true) }
+            const newLib = {
+                ...lib,
+                config: {
+                    ...lib.config,
+                    mask_all_text: true,
+                },
+            }
 
             document.body.innerHTML = dom
             const a = document.getElementById('a1')
@@ -1075,19 +1065,14 @@ describe('Autocapture system', () => {
     })
 
     describe('_addDomEventHandlers', () => {
-        const sandbox = sinon.createSandbox()
-
         const lib = {
             capture: sinon.spy(),
             get_distinct_id() {
                 return 'distinctid'
             },
-            get_config: sandbox.spy(function (key) {
-                switch (key) {
-                    case 'mask_all_element_attributes':
-                        return false
-                }
-            }),
+            config: {
+                mask_all_element_attributes: false,
+            },
         }
 
         let navigateSpy
@@ -1125,7 +1110,11 @@ describe('Autocapture system', () => {
         given('persistence', () => ({ props: {}, register: jest.fn() }))
 
         given('posthog', () => ({
-            get_config: jest.fn().mockImplementation((key) => given.config[key]),
+            config: {
+                api_host: 'https://test.com',
+                token: 'testtoken',
+                autocapture: true,
+            },
             token: 'testtoken',
             capture: jest.fn(),
             get_distinct_id: () => 'distinctid',
@@ -1134,14 +1123,6 @@ describe('Autocapture system', () => {
             persistence: given.persistence,
         }))
 
-        given('clientSideEnabled', () => true)
-
-        given('config', () => ({
-            api_host: 'https://test.com',
-            token: 'testtoken',
-            autocapture: given.clientSideEnabled,
-        }))
-
         given('decideResponse', () => ({ config: { enable_collect_everything: true } }))
 
         beforeEach(() => {
@@ -1166,7 +1147,7 @@ describe('Autocapture system', () => {
         })
 
         it('should be disabled before the decide response if client side opted out', () => {
-            given('clientSideEnabled', () => false)
+            given.posthog.config.autocapture = false
 
             // _setIsAutocaptureEnabled is called during init
             autocapture._setIsAutocaptureEnabled(given.posthog)
@@ -1183,7 +1164,7 @@ describe('Autocapture system', () => {
         ])(
             'when client side config is %p and remote opt out is %p - autocapture enabled should be %p',
             (clientSideOptIn, serverSideOptOut, expected) => {
-                given('clientSideEnabled', () => clientSideOptIn)
+                given.posthog.config.autocapture = clientSideOptIn
                 given('decideResponse', () => ({
                     config: { enable_collect_everything: true },
                     autocapture_opt_out: serverSideOptOut,
@@ -1201,11 +1182,11 @@ describe('Autocapture system', () => {
         })
 
         it('should not call _addDomEventHandlders if autocapture is disabled', () => {
-            given('config', () => ({
+            given.posthog.config = {
                 api_host: 'https://test.com',
                 token: 'testtoken',
                 autocapture: false,
-            }))
+            }
             given('$autocapture_disabled_server_side', () => true)
             given.subject()
             expect(autocapture._addDomEventHandlers).not.toHaveBeenCalled()
@@ -1233,7 +1214,7 @@ describe('Autocapture system', () => {
             autocapture.afterDecideResponse(given.decideResponse, given.posthog)
             expect(autocapture._addDomEventHandlers).toHaveBeenCalledTimes(1)
 
-            given('config', () => ({ api_host: 'https://test.com', token: 'anotherproject', autocapture: true }))
+            given.posthog.config = { api_host: 'https://test.com', token: 'anotherproject', autocapture: true }
             autocapture.afterDecideResponse(given.decideResponse, given.posthog)
             expect(autocapture._addDomEventHandlers).toHaveBeenCalledTimes(2)
         })
diff --git a/src/__tests__/compression.js b/src/__tests__/compression.js
index 2904fe5bd..53a5b6688 100644
--- a/src/__tests__/compression.js
+++ b/src/__tests__/compression.js
@@ -69,14 +69,10 @@ describe('Payload Compression', () => {
                         throw new Error('Should not get here')
                     }
                 }),
-                get_config: sandbox.spy(function (key) {
-                    switch (key) {
-                        case 'api_host':
-                            return 'https://test.com'
-                        case 'token':
-                            return 'testtoken'
-                    }
-                }),
+                config: {
+                    api_host: 'https://test.com',
+                    token: 'testtoken',
+                },
                 token: 'testtoken',
                 get_distinct_id() {
                     return 'distinctid'
diff --git a/src/__tests__/decide.js b/src/__tests__/decide.js
index 20122a342..ca88dfa4f 100644
--- a/src/__tests__/decide.js
+++ b/src/__tests__/decide.js
@@ -3,10 +3,28 @@ import { Decide } from '../decide'
 import { _base64Encode } from '../utils'
 import { PostHogPersistence } from '../posthog-persistence'
 
+const expectDecodedSendRequest = (send_request, data) => {
+    const lastCall = send_request.mock.calls[send_request.mock.calls.length - 1]
+
+    const decoded = JSON.parse(atob(lastCall[1].data))
+    // Helper to give us more accurate error messages
+    expect(decoded).toEqual(data)
+
+    expect(given.posthog._send_request).toHaveBeenCalledWith(
+        'https://test.com/decide/?v=3',
+        {
+            data: _base64Encode(JSON.stringify(data)),
+            verbose: true,
+        },
+        { method: 'POST' },
+        expect.any(Function)
+    )
+}
+
 describe('Decide', () => {
     given('decide', () => new Decide(given.posthog))
     given('posthog', () => ({
-        get_config: jest.fn().mockImplementation((key) => given.config[key]),
+        config: given.config,
         persistence: new PostHogPersistence(given.config),
         register: (props) => given.posthog.persistence.register(props),
         unregister: (key) => given.posthog.persistence.unregister(key),
@@ -54,21 +72,11 @@ describe('Decide', () => {
         it('should call instance._send_request on constructor', () => {
             given.subject()
 
-            expect(given.posthog._send_request).toHaveBeenCalledWith(
-                'https://test.com/decide/?v=3',
-                {
-                    data: _base64Encode(
-                        JSON.stringify({
-                            token: 'testtoken',
-                            distinct_id: 'distinctid',
-                            groups: { organization: '5' },
-                        })
-                    ),
-                    verbose: true,
-                },
-                { method: 'POST' },
-                expect.any(Function)
-            )
+            expectDecodedSendRequest(given.posthog._send_request, {
+                token: 'testtoken',
+                distinct_id: 'distinctid',
+                groups: { organization: '5' },
+            })
         })
 
         it('should send all stored properties with decide request', () => {
@@ -78,89 +86,59 @@ describe('Decide', () => {
             })
             given.subject()
 
-            expect(given.posthog._send_request).toHaveBeenCalledWith(
-                'https://test.com/decide/?v=3',
-                {
-                    data: _base64Encode(
-                        JSON.stringify({
-                            token: 'testtoken',
-                            distinct_id: 'distinctid',
-                            groups: { organization: '5' },
-                            person_properties: { key: 'value' },
-                            group_properties: { organization: { orgName: 'orgValue' } },
-                        })
-                    ),
-                    verbose: true,
-                },
-                { method: 'POST' },
-                expect.any(Function)
-            )
+            expectDecodedSendRequest(given.posthog._send_request, {
+                token: 'testtoken',
+                distinct_id: 'distinctid',
+                groups: { organization: '5' },
+                person_properties: { key: 'value' },
+                group_properties: { organization: { orgName: 'orgValue' } },
+            })
         })
 
         it('should send disable flags with decide request when config is set', () => {
-            given.posthog.register({
-                $stored_person_properties: { key: 'value' },
-                $stored_group_properties: { organization: { orgName: 'orgValue' } },
-            })
             given('config', () => ({
                 api_host: 'https://test.com',
                 token: 'testtoken',
                 persistence: 'memory',
                 advanced_disable_feature_flags: true,
             }))
+            given.posthog.register({
+                $stored_person_properties: { key: 'value' },
+                $stored_group_properties: { organization: { orgName: 'orgValue' } },
+            })
             given.subject()
 
-            expect(given.posthog._send_request).toHaveBeenCalledWith(
-                'https://test.com/decide/?v=3',
-                {
-                    data: _base64Encode(
-                        JSON.stringify({
-                            token: 'testtoken',
-                            distinct_id: 'distinctid',
-                            groups: { organization: '5' },
-                            person_properties: { key: 'value' },
-                            group_properties: { organization: { orgName: 'orgValue' } },
-                            disable_flags: true,
-                        })
-                    ),
-                    verbose: true,
-                },
-                { method: 'POST' },
-                expect.any(Function)
-            )
+            expectDecodedSendRequest(given.posthog._send_request, {
+                token: 'testtoken',
+                distinct_id: 'distinctid',
+                groups: { organization: '5' },
+                person_properties: { key: 'value' },
+                group_properties: { organization: { orgName: 'orgValue' } },
+                disable_flags: true,
+            })
         })
 
         it('should send disable flags with decide request when config for advanced_disable_feature_flags_on_first_load is set', () => {
-            given.posthog.register({
-                $stored_person_properties: { key: 'value' },
-                $stored_group_properties: { organization: { orgName: 'orgValue' } },
-            })
             given('config', () => ({
                 api_host: 'https://test.com',
                 token: 'testtoken',
                 persistence: 'memory',
                 advanced_disable_feature_flags_on_first_load: true,
             }))
+            given.posthog.register({
+                $stored_person_properties: { key: 'value' },
+                $stored_group_properties: { organization: { orgName: 'orgValue' } },
+            })
             given.subject()
 
-            expect(given.posthog._send_request).toHaveBeenCalledWith(
-                'https://test.com/decide/?v=3',
-                {
-                    data: _base64Encode(
-                        JSON.stringify({
-                            token: 'testtoken',
-                            distinct_id: 'distinctid',
-                            groups: { organization: '5' },
-                            person_properties: { key: 'value' },
-                            group_properties: { organization: { orgName: 'orgValue' } },
-                            disable_flags: true,
-                        })
-                    ),
-                    verbose: true,
-                },
-                { method: 'POST' },
-                expect.any(Function)
-            )
+            expectDecodedSendRequest(given.posthog._send_request, {
+                token: 'testtoken',
+                distinct_id: 'distinctid',
+                groups: { organization: '5' },
+                person_properties: { key: 'value' },
+                group_properties: { organization: { orgName: 'orgValue' } },
+                disable_flags: true,
+            })
         })
     })
 
diff --git a/src/__tests__/extensions/exceptions/exception-observer.test.ts b/src/__tests__/extensions/exceptions/exception-observer.test.ts
index 9bbb49f5c..42833cf46 100644
--- a/src/__tests__/extensions/exceptions/exception-observer.test.ts
+++ b/src/__tests__/extensions/exceptions/exception-observer.test.ts
@@ -13,7 +13,7 @@ describe('Exception Observer', () => {
 
     beforeEach(() => {
         mockPostHogInstance = {
-            get_config: jest.fn((key: string) => mockConfig[key as keyof PostHogConfig]),
+            config: mockConfig,
             get_distinct_id: jest.fn(() => 'mock-distinct-id'),
             capture: mockCapture,
         }
diff --git a/src/__tests__/extensions/sessionrecording.js b/src/__tests__/extensions/sessionrecording.js
index bc68b1108..b847e9ccc 100644
--- a/src/__tests__/extensions/sessionrecording.js
+++ b/src/__tests__/extensions/sessionrecording.js
@@ -45,7 +45,7 @@ describe('SessionRecording', () => {
                 : property_key === SESSION_RECORDING_ENABLED_SERVER_SIDE
                 ? given.$session_recording_enabled_server_side
                 : given.$console_log_enabled_server_side,
-        get_config: jest.fn().mockImplementation((key) => given.config[key]),
+        config: given.config,
         capture: jest.fn(),
         persistence: { register: jest.fn() },
         sessionManager: given.sessionManager,
@@ -55,7 +55,7 @@ describe('SessionRecording', () => {
 
     given('config', () => ({
         api_host: 'https://test.com',
-        disable_session_recording: given.disabled,
+        disable_session_recording: false,
         enable_recording_console_log: given.enable_recording_console_log_client_side,
         autocapture: false, // Assert that session recording works even if `autocapture = false`
         session_recording: {
@@ -68,7 +68,6 @@ describe('SessionRecording', () => {
     given('$session_recording_enabled_server_side', () => true)
     given('$console_log_enabled_server_side', () => false)
     given('$session_recording_recorder_version_server_side', () => undefined)
-    given('disabled', () => false)
     given('__loaded_recorder_version', () => undefined)
 
     beforeEach(() => {
@@ -90,7 +89,7 @@ describe('SessionRecording', () => {
         })
 
         it('is disabled if the client config is disabled', () => {
-            given('disabled', () => true)
+            given.posthog.config.disable_session_recording = true
             given.subject()
             expect(given.subject()).toBe(false)
         })
@@ -164,7 +163,7 @@ describe('SessionRecording', () => {
         })
 
         it('call stopRecording if its not enabled', () => {
-            given('disabled', () => true)
+            given.posthog.config.disable_session_recording = true
             given.subject()
             expect(given.sessionRecording.stopRecording).toHaveBeenCalled()
         })
@@ -427,7 +426,7 @@ describe('SessionRecording', () => {
         })
 
         it('does not load script if disable_session_recording passed', () => {
-            given('disabled', () => true)
+            given.posthog.config.disable_session_recording = true
 
             given.sessionRecording.startRecordingIfEnabled()
             given.sessionRecording.startCaptureAndTrySendingQueuedSnapshots()
diff --git a/src/__tests__/extensions/toolbar.js b/src/__tests__/extensions/toolbar.js
index b18a4f01e..91445dcf3 100644
--- a/src/__tests__/extensions/toolbar.js
+++ b/src/__tests__/extensions/toolbar.js
@@ -10,7 +10,7 @@ describe('Toolbar', () => {
     given('toolbar', () => new Toolbar(given.lib))
 
     given('lib', () => ({
-        get_config: jest.fn().mockImplementation((key) => given.config[key]),
+        config: given.config,
         set_config: jest.fn(),
     }))
 
diff --git a/src/__tests__/extensions/web-performance.test.ts b/src/__tests__/extensions/web-performance.test.ts
index 5e666a51a..96af1146c 100644
--- a/src/__tests__/extensions/web-performance.test.ts
+++ b/src/__tests__/extensions/web-performance.test.ts
@@ -35,7 +35,7 @@ describe('WebPerformance', () => {
 
     beforeEach(() => {
         mockPostHogInstance = {
-            get_config: jest.fn((key: string) => mockConfig[key as keyof PostHogConfig]),
+            config: mockConfig,
             sessionRecording: {
                 onRRwebEmit: jest.fn(),
             },
diff --git a/src/__tests__/featureflags.js b/src/__tests__/featureflags.js
index e7a46cd81..26f6ec5e8 100644
--- a/src/__tests__/featureflags.js
+++ b/src/__tests__/featureflags.js
@@ -8,26 +8,25 @@ jest.spyOn(global, 'setTimeout')
 
 describe('featureflags', () => {
     given('decideEndpointWasHit', () => false)
-    given('config', () => ({
-        token: 'testtoken',
+
+    const config = {
+        token: 'random fake token',
         persistence: 'memory',
-    })),
-        given('instance', () => ({
-            get_config: jest.fn().mockImplementation((key) => given.config[key]),
-            get_distinct_id: () => 'blah id',
-            getGroups: () => {},
-            _prepare_callback: (callback) => callback,
-            persistence: new PostHogPersistence(given.config),
-            register: (props) => given.instance.persistence.register(props),
-            unregister: (key) => given.instance.persistence.unregister(key),
-            get_property: (key) => given.instance.persistence.props[key],
-            capture: () => {},
-            decideEndpointWasHit: given.decideEndpointWasHit,
-            _send_request: jest
-                .fn()
-                .mockImplementation((url, data, headers, callback) => callback(given.decideResponse)),
-            reloadFeatureFlags: () => given.featureFlags.reloadFeatureFlags(),
-        }))
+    }
+    given('instance', () => ({
+        config,
+        get_distinct_id: () => 'blah id',
+        getGroups: () => {},
+        _prepare_callback: (callback) => callback,
+        persistence: new PostHogPersistence(config),
+        register: (props) => given.instance.persistence.register(props),
+        unregister: (key) => given.instance.persistence.unregister(key),
+        get_property: (key) => given.instance.persistence.props[key],
+        capture: () => {},
+        decideEndpointWasHit: given.decideEndpointWasHit,
+        _send_request: jest.fn().mockImplementation((url, data, headers, callback) => callback(given.decideResponse)),
+        reloadFeatureFlags: () => given.featureFlags.reloadFeatureFlags(),
+    }))
 
     given('featureFlags', () => new PostHogFeatureFlags(given.instance))
 
@@ -216,11 +215,6 @@ describe('featureflags', () => {
             },
         }))
 
-        given('config', () => ({
-            token: 'random fake token',
-            persistence: 'memory',
-        }))
-
         it('onFeatureFlags should not be called immediately if feature flags not loaded', () => {
             var called = false
             let _flags = []
@@ -323,10 +317,12 @@ describe('featureflags', () => {
             earlyAccessFeatures: [EARLY_ACCESS_FEATURE_FIRST],
         }))
 
-        given('config', () => ({
-            token: 'random fake token',
-            api_host: 'https://decide.com',
-        }))
+        beforeEach(() => {
+            given.instance.config = {
+                ...given.instance.config,
+                api_host: 'https://decide.com',
+            }
+        })
 
         it('getEarlyAccessFeatures requests early access features if not present', () => {
             given.featureFlags.getEarlyAccessFeatures((data) => {
@@ -467,11 +463,6 @@ describe('featureflags', () => {
             },
         }))
 
-        given('config', () => ({
-            token: 'random fake token',
-            persistence: 'memory',
-        }))
-
         it('on providing anonDistinctId', () => {
             given.featureFlags.setAnonymousDistinctId('rando_id')
             given.featureFlags.reloadFeatureFlags()
@@ -561,11 +552,11 @@ describe('featureflags', () => {
         })
 
         it('on providing config advanced_disable_feature_flags', () => {
-            given('config', () => ({
-                token: 'random fake token',
-                persistence: 'memory',
+            given.instance.config = {
+                ...given.instance.config,
                 advanced_disable_feature_flags: true,
-            }))
+            }
+
             given.featureFlags.reloadFeatureFlags()
 
             jest.runAllTimers()
@@ -595,11 +586,6 @@ describe('featureflags', () => {
             },
         }))
 
-        given('config', () => ({
-            token: 'random fake token',
-            persistence: 'memory',
-        }))
-
         it('on providing personProperties updates properties successively', () => {
             given.featureFlags.setPersonPropertiesForFlags({ a: 'b', c: 'd' })
             given.featureFlags.setPersonPropertiesForFlags({ x: 'y', c: 'e' })
@@ -736,11 +722,6 @@ describe('featureflags', () => {
             errorsWhileComputingFlags: true,
         }))
 
-        given('config', () => ({
-            token: 'random fake token',
-            persistence: 'memory',
-        }))
-
         it('should return combined results', () => {
             given.featureFlags.reloadFeatureFlags()
 
@@ -763,11 +744,6 @@ describe('featureflags', () => {
             errorsWhileComputingFlags: false,
         }))
 
-        given('config', () => ({
-            token: 'random fake token',
-            persistence: 'memory',
-        }))
-
         it('should return combined results', () => {
             given.featureFlags.reloadFeatureFlags()
 
diff --git a/src/__tests__/gdpr-utils.js b/src/__tests__/gdpr-utils.js
index c8b02e2cc..df419bd17 100644
--- a/src/__tests__/gdpr-utils.js
+++ b/src/__tests__/gdpr-utils.js
@@ -473,13 +473,12 @@ describe(`GDPR utils`, () => {
     describe(`addOptOutCheckPostHogLib`, () => {
         const captureEventName = `єνєηт`
         const captureProperties = { '𝖕𝖗𝖔𝖕𝖊𝖗𝖙𝖞': `𝓿𝓪𝓵𝓾𝓮` }
-        let getConfig, capture, postHogLib
+        let capture, postHogLib
 
-        function setupMocks(getConfigFunc, silenceErrors = false) {
-            getConfig = sinon.spy((name) => getConfigFunc()[name])
+        function setupMocks(config, silenceErrors = false) {
             capture = sinon.spy()
             postHogLib = {
-                get_config: getConfig,
+                config,
                 capture: undefined,
             }
             postHogLib.capture = gdpr.addOptOutCheck(postHogLib, capture, silenceErrors)
@@ -488,7 +487,7 @@ describe(`GDPR utils`, () => {
         forPersistenceTypes(function (persistenceType) {
             it(`should call the wrapped method if the user is neither opted in or opted out`, () => {
                 TOKENS.forEach((token) => {
-                    setupMocks(() => ({ token, opt_out_capturing_persistence_type: persistenceType }))
+                    setupMocks({ token, opt_out_capturing_persistence_type: persistenceType })
 
                     postHogLib.capture(captureEventName, captureProperties)
 
@@ -498,7 +497,7 @@ describe(`GDPR utils`, () => {
 
             it(`should call the wrapped method if the user is opted in`, () => {
                 TOKENS.forEach((token) => {
-                    setupMocks(() => ({ token, opt_out_capturing_persistence_type: persistenceType }))
+                    setupMocks({ token, opt_out_capturing_persistence_type: persistenceType })
 
                     gdpr.optIn(token, { persistenceType })
                     postHogLib.capture(captureEventName, captureProperties)
@@ -509,7 +508,7 @@ describe(`GDPR utils`, () => {
 
             it(`should not call the wrapped method if the user is opted out`, () => {
                 TOKENS.forEach((token) => {
-                    setupMocks(() => ({ token, opt_out_capturing_persistence_type: persistenceType }))
+                    setupMocks({ token, opt_out_capturing_persistence_type: persistenceType })
 
                     gdpr.optOut(token, { persistenceType })
                     postHogLib.capture(captureEventName, captureProperties)
@@ -520,7 +519,7 @@ describe(`GDPR utils`, () => {
 
             it(`should not invoke the callback directly if the user is neither opted in or opted out`, () => {
                 TOKENS.forEach((token) => {
-                    setupMocks(() => ({ token, opt_out_capturing_persistence_type: persistenceType }))
+                    setupMocks({ token, opt_out_capturing_persistence_type: persistenceType })
                     const callback = sinon.spy()
 
                     postHogLib.capture(captureEventName, captureProperties, callback)
@@ -531,7 +530,7 @@ describe(`GDPR utils`, () => {
 
             it(`should not invoke the callback directly if the user is opted in`, () => {
                 TOKENS.forEach((token) => {
-                    setupMocks(() => ({ token, opt_out_capturing_persistence_type: persistenceType }))
+                    setupMocks({ token, opt_out_capturing_persistence_type: persistenceType })
                     const callback = sinon.spy()
 
                     gdpr.optIn(token, { persistenceType })
@@ -543,7 +542,7 @@ describe(`GDPR utils`, () => {
 
             it(`should invoke the callback directly if the user is opted out`, () => {
                 TOKENS.forEach((token) => {
-                    setupMocks(() => ({ token, opt_out_capturing_persistence_type: persistenceType }))
+                    setupMocks({ token, opt_out_capturing_persistence_type: persistenceType })
                     const callback = sinon.spy()
 
                     gdpr.optOut(token, { persistenceType })
@@ -555,20 +554,7 @@ describe(`GDPR utils`, () => {
 
             it(`should call the wrapped method if there is no token available`, () => {
                 TOKENS.forEach((token) => {
-                    setupMocks(() => ({ token: null, opt_out_capturing_persistence_type: persistenceType }))
-
-                    gdpr.optIn(token, { persistenceType })
-                    postHogLib.capture(captureEventName, captureProperties)
-
-                    expect(capture.calledOnceWith(captureEventName, captureProperties)).toBe(true)
-                })
-            })
-
-            it(`should call the wrapped method if an unexpected error occurs`, () => {
-                TOKENS.forEach((token) => {
-                    setupMocks(() => {
-                        throw new Error(`Unexpected error!`)
-                    }, true)
+                    setupMocks({ token: null, opt_out_capturing_persistence_type: persistenceType })
 
                     gdpr.optIn(token, { persistenceType })
                     postHogLib.capture(captureEventName, captureProperties)
@@ -579,7 +565,7 @@ describe(`GDPR utils`, () => {
 
             it(`should call the wrapped method if config is undefined`, () => {
                 TOKENS.forEach((token) => {
-                    setupMocks(() => undefined, false)
+                    setupMocks(undefined, false)
                     console.error = jest.fn()
 
                     gdpr.optIn(token, { persistenceType })
@@ -593,11 +579,11 @@ describe(`GDPR utils`, () => {
 
             it(`should allow use of a custom "persistence prefix" string`, () => {
                 TOKENS.forEach((token) => {
-                    setupMocks(() => ({
+                    setupMocks({
                         token,
                         opt_out_capturing_persistence_type: persistenceType,
                         opt_out_capturing_cookie_prefix: CUSTOM_PERSISTENCE_PREFIX,
-                    }))
+                    })
 
                     gdpr.optOut(token, { persistenceType, persistencePrefix: CUSTOM_PERSISTENCE_PREFIX })
                     postHogLib.capture(captureEventName, captureProperties)
diff --git a/src/__tests__/posthog-core.js b/src/__tests__/posthog-core.js
index 87a2a2ac2..4991c86cb 100644
--- a/src/__tests__/posthog-core.js
+++ b/src/__tests__/posthog-core.js
@@ -38,7 +38,6 @@ describe('capture()', () => {
 
     given('overrides', () => ({
         __loaded: true,
-        get_config: (key) => given.config?.[key],
         config: given.config,
         persistence: {
             remove_event_timer: jest.fn(),
@@ -187,7 +186,7 @@ describe('_calculate_event_properties()', () => {
     given('options', () => ({}))
 
     given('overrides', () => ({
-        get_config: (key) => given.config[key],
+        config: given.config,
         persistence: {
             properties: () => ({ distinct_id: 'abc', persistent: 'prop' }),
             remove_event_timer: jest.fn(),
@@ -298,7 +297,7 @@ describe('_handle_unload()', () => {
     given('subject', () => () => given.lib._handle_unload())
 
     given('overrides', () => ({
-        get_config: (key) => given.config[key],
+        config: given.config,
         capture: jest.fn(),
         compression: {},
         _requestQueue: {
@@ -369,7 +368,7 @@ describe('__compress_and_send_json_request', () => {
     given('overrides', () => ({
         compression: {},
         _send_request: jest.fn(),
-        get_config: () => false,
+        config: {},
     }))
 
     it('handles base64 compression', () => {
@@ -576,7 +575,7 @@ describe('init()', () => {
                 'a-name'
             )
         )
-        expect(given.subject.get_config('on_xhr_error')).toBe(fakeOnXHRError)
+        expect(given.subject.config.on_xhr_error).toBe(fakeOnXHRError)
     })
 
     it('does not load decide endpoint on advanced_disable_decide', () => {
@@ -888,7 +887,7 @@ describe('_loaded()', () => {
     given('subject', () => () => given.lib._loaded())
 
     given('overrides', () => ({
-        get_config: (key) => given.config?.[key],
+        config: given.config,
         capture: jest.fn(),
         featureFlags: {
             setReloadingPaused: jest.fn(),
diff --git a/src/__tests__/posthog-core.loaded.js b/src/__tests__/posthog-core.loaded.js
index 4f7ce5e8b..99f7da655 100644
--- a/src/__tests__/posthog-core.loaded.js
+++ b/src/__tests__/posthog-core.loaded.js
@@ -13,7 +13,7 @@ describe('loaded() with flags', () => {
     given('subject', () => () => given.lib._loaded())
 
     given('overrides', () => ({
-        get_config: (key) => given.config?.[key],
+        config: given.config,
         capture: jest.fn(),
         featureFlags: {
             setReloadingPaused: jest.fn(),
@@ -39,7 +39,7 @@ describe('loaded() with flags', () => {
         }))
 
         given('overrides', () => ({
-            get_config: (key) => given.config?.[key],
+            config: given.config,
             capture: jest.fn(),
             _send_request: jest.fn((host, data, header, callback) => setTimeout(() => callback({ status: 200 }), 1000)),
             _start_queue_if_opted_in: jest.fn(),
diff --git a/src/__tests__/surveys.js b/src/__tests__/surveys.js
index 20024e24b..073e21a11 100644
--- a/src/__tests__/surveys.js
+++ b/src/__tests__/surveys.js
@@ -9,7 +9,7 @@ describe('surveys', () => {
         persistence: 'memory',
     }))
     given('instance', () => ({
-        get_config: jest.fn().mockImplementation((key) => given.config[key]),
+        config: given.config,
         _prepare_callback: (callback) => callback,
         persistence: new PostHogPersistence(given.config),
         register: (props) => given.instance.persistence.register(props),
diff --git a/src/autocapture.ts b/src/autocapture.ts
index 5913d7070..09941d3ce 100644
--- a/src/autocapture.ts
+++ b/src/autocapture.ts
@@ -46,7 +46,7 @@ const autocapture = {
             this._isDisabledServerSide === null
                 ? !!instance.persistence?.props[AUTOCAPTURE_DISABLED_SERVER_SIDE]
                 : this._isDisabledServerSide
-        const enabled_client_side = !!instance.get_config('autocapture')
+        const enabled_client_side = !!instance.config.autocapture
         this._isAutocaptureEnabled = enabled_client_side && !disabled_server_side
     },
 
@@ -233,8 +233,8 @@ const autocapture = {
                 elementsJson.push(
                     this._getPropertiesFromElement(
                         el,
-                        instance.get_config('mask_all_element_attributes'),
-                        instance.get_config('mask_all_text')
+                        instance.config.mask_all_element_attributes,
+                        instance.config.mask_all_text
                     )
                 )
 
@@ -242,7 +242,7 @@ const autocapture = {
                 _extend(autocaptureAugmentProperties, augmentProperties)
             })
 
-            if (!instance.get_config('mask_all_text')) {
+            if (!instance.config.mask_all_text) {
                 // if the element is a button or anchor tag get the span text from any
                 // children and include it as/with the text property on the parent element
                 if (target.tagName.toLowerCase() === 'a' || target.tagName.toLowerCase() === 'button') {
@@ -305,11 +305,11 @@ const autocapture = {
             this.config.url_allowlist = this.config.url_allowlist.map((url) => new RegExp(url))
         }
 
-        this.rageclicks = new RageClick(instance.get_config('rageclick'))
+        this.rageclicks = new RageClick(instance.config.rageclick)
     },
 
     afterDecideResponse: function (response: DecideResponse, instance: PostHog): void {
-        const token = instance.get_config('token')
+        const token = instance.config.token
         if (this._initializedTokens.indexOf(token) > -1) {
             logger.log('autocapture already initialized for token "' + token + '"')
             return
diff --git a/src/config.ts b/src/config.ts
index 7da572bd8..fcd2b741c 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,7 +1,7 @@
 import { version } from '../package.json'
 
 // overriden in posthog-core,
-// e.g.     Config.DEBUG = Config.DEBUG || instance.get_config('debug')
+// e.g.     Config.DEBUG = Config.DEBUG || instance.config.debug
 const Config = {
     DEBUG: false,
     LIB_VERSION: version,
diff --git a/src/decide.ts b/src/decide.ts
index 49d434e86..3362a2124 100644
--- a/src/decide.ts
+++ b/src/decide.ts
@@ -18,20 +18,20 @@ export class Decide {
         Calls /decide endpoint to fetch options for autocapture, session recording, feature flags & compression.
         */
         const json_data = JSON.stringify({
-            token: this.instance.get_config('token'),
+            token: this.instance.config.token,
             distinct_id: this.instance.get_distinct_id(),
             groups: this.instance.getGroups(),
             person_properties: this.instance.get_property(STORED_PERSON_PROPERTIES_KEY),
             group_properties: this.instance.get_property(STORED_GROUP_PROPERTIES_KEY),
             disable_flags:
-                this.instance.get_config('advanced_disable_feature_flags') ||
-                this.instance.get_config('advanced_disable_feature_flags_on_first_load') ||
+                this.instance.config.advanced_disable_feature_flags ||
+                this.instance.config.advanced_disable_feature_flags_on_first_load ||
                 undefined,
         })
 
         const encoded_data = _base64Encode(json_data)
         this.instance._send_request(
-            `${this.instance.get_config('api_host')}/decide/?v=3`,
+            `${this.instance.config.api_host}/decide/?v=3`,
             { data: encoded_data, verbose: true },
             { method: 'POST' },
             (response) => this.parseDecideResponse(response as DecideResponse)
@@ -61,12 +61,12 @@ export class Decide {
         this.instance.webPerformance?.afterDecideResponse(response)
         this.instance.exceptionAutocapture?.afterDecideResponse(response)
 
-        if (!this.instance.get_config('advanced_disable_feature_flags_on_first_load')) {
+        if (!this.instance.config.advanced_disable_feature_flags_on_first_load) {
             this.instance.featureFlags.receivedFeatureFlags(response)
         }
 
         this.instance['compression'] = {}
-        if (response['supportedCompression'] && !this.instance.get_config('disable_compression')) {
+        if (response['supportedCompression'] && !this.instance.config.disable_compression) {
             const compression: Partial<Record<Compression, boolean>> = {}
             for (const method of response['supportedCompression']) {
                 compression[method] = true
@@ -80,7 +80,7 @@ export class Decide {
         const surveysGenerator = window?.extendPostHogWithSurveys
 
         if (response['surveys'] && !surveysGenerator) {
-            loadScript(this.instance.get_config('api_host') + `/static/surveys.js`, (err) => {
+            loadScript(this.instance.config.api_host + `/static/surveys.js`, (err) => {
                 if (err) {
                     return console.error(`Could not load surveys script`, err)
                 }
@@ -92,8 +92,8 @@ export class Decide {
         }
 
         if (response['siteApps']) {
-            if (this.instance.get_config('opt_in_site_apps')) {
-                const apiHost = this.instance.get_config('api_host')
+            if (this.instance.config.opt_in_site_apps) {
+                const apiHost = this.instance.config.api_host
                 for (const { id, url } of response['siteApps']) {
                     const scriptUrl = [
                         apiHost,
diff --git a/src/extensions/exceptions/exception-autocapture.ts b/src/extensions/exceptions/exception-autocapture.ts
index 4b31ee9b3..18ac96b90 100644
--- a/src/extensions/exceptions/exception-autocapture.ts
+++ b/src/extensions/exceptions/exception-autocapture.ts
@@ -19,7 +19,7 @@ export class ExceptionObserver {
     }
 
     private debugLog(...args: any[]) {
-        if (this.instance.get_config('debug')) {
+        if (this.instance.config.debug) {
             console.log('PostHog.js [PostHog.ExceptionObserver]', ...args)
         }
     }
@@ -125,7 +125,7 @@ export class ExceptionObserver {
 
         const propertiesToSend = { ...properties, ...errorProperties }
 
-        const posthogHost = this.instance.get_config('ui_host') || this.instance.get_config('api_host')
+        const posthogHost = this.instance.config.ui_host || this.instance.config.api_host
         errorProperties.$exception_personURL = posthogHost + '/person/' + this.instance.get_distinct_id()
 
         this.sendExceptionEvent(propertiesToSend)
diff --git a/src/extensions/sessionrecording.ts b/src/extensions/sessionrecording.ts
index 06221a17b..e0b8ef911 100644
--- a/src/extensions/sessionrecording.ts
+++ b/src/extensions/sessionrecording.ts
@@ -132,19 +132,19 @@ export class SessionRecording {
 
     isRecordingEnabled() {
         const enabled_server_side = !!this.instance.get_property(SESSION_RECORDING_ENABLED_SERVER_SIDE)
-        const enabled_client_side = !this.instance.get_config('disable_session_recording')
+        const enabled_client_side = !this.instance.config.disable_session_recording
         return enabled_server_side && enabled_client_side
     }
 
     isConsoleLogCaptureEnabled() {
         const enabled_server_side = !!this.instance.get_property(CONSOLE_LOG_RECORDING_ENABLED_SERVER_SIDE)
-        const enabled_client_side = this.instance.get_config('enable_recording_console_log')
+        const enabled_client_side = this.instance.config.enable_recording_console_log
         return enabled_client_side ?? enabled_server_side
     }
 
     getRecordingVersion() {
         const recordingVersion_server_side = this.instance.get_property(SESSION_RECORDING_RECORDER_VERSION_SERVER_SIDE)
-        const recordingVersion_client_side = this.instance.get_config('session_recording')?.recorderVersion
+        const recordingVersion_client_side = this.instance.config.session_recording?.recorderVersion
         return recordingVersion_client_side || recordingVersion_server_side || 'v1'
     }
 
@@ -210,7 +210,7 @@ export class SessionRecording {
         }
 
         // We do not switch recorder versions midway through a recording.
-        if (this.captureStarted || this.instance.get_config('disable_session_recording')) {
+        if (this.captureStarted || this.instance.config.disable_session_recording) {
             return
         }
 
@@ -224,16 +224,13 @@ export class SessionRecording {
         // imported) or matches the requested recorder version, don't load script. Otherwise, remotely import
         // recorder.js from cdn since it hasn't been loaded.
         if (this.instance.__loaded_recorder_version !== this.getRecordingVersion()) {
-            loadScript(
-                this.instance.get_config('api_host') + `/static/${recorderJS}?v=${Config.LIB_VERSION}`,
-                (err) => {
-                    if (err) {
-                        return logger.error(`Could not load ${recorderJS}`, err)
-                    }
-
-                    this._onScriptLoaded()
+            loadScript(this.instance.config.api_host + `/static/${recorderJS}?v=${Config.LIB_VERSION}`, (err) => {
+                if (err) {
+                    return logger.error(`Could not load ${recorderJS}`, err)
                 }
-            )
+
+                this._onScriptLoaded()
+            })
         } else {
             this._onScriptLoaded()
         }
@@ -330,7 +327,7 @@ export class SessionRecording {
         this.rrwebRecord = window.rrweb ? window.rrweb.record : window.rrwebRecord
 
         // only allows user to set our 'allowlisted' options
-        const userSessionRecordingOptions = this.instance.get_config('session_recording')
+        const userSessionRecordingOptions = this.instance.config.session_recording
         for (const [key, value] of Object.entries(userSessionRecordingOptions || {})) {
             if (key in sessionRecordingOptions) {
                 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
diff --git a/src/extensions/toolbar.ts b/src/extensions/toolbar.ts
index 111a69cbf..f4e2af8ee 100644
--- a/src/extensions/toolbar.ts
+++ b/src/extensions/toolbar.ts
@@ -79,7 +79,7 @@ export class Toolbar {
                 delete toolbarParams.userIntent
             }
 
-            if (toolbarParams['token'] && this.instance.get_config('token') === toolbarParams['token']) {
+            if (toolbarParams['token'] && this.instance.config.token === toolbarParams['token']) {
                 this.loadToolbar(toolbarParams)
                 return true
             } else {
@@ -97,7 +97,7 @@ export class Toolbar {
         // only load the toolbar once, even if there are multiple instances of PostHogLib
         ;(window as any)['_postHogToolbarLoaded'] = true
 
-        const host = this.instance.get_config('api_host')
+        const host = this.instance.config.api_host
         // toolbar.js is served from the PostHog CDN, this has a TTL of 24 hours.
         // the toolbar asset includes a rotating "token" that is valid for 5 minutes.
         const fiveMinutesInMillis = 5 * 60 * 1000
@@ -105,11 +105,11 @@ export class Toolbar {
         const timestampToNearestFiveMinutes = Math.floor(Date.now() / fiveMinutesInMillis) * fiveMinutesInMillis
         const toolbarUrl = `${host}${host.endsWith('/') ? '' : '/'}static/toolbar.js?t=${timestampToNearestFiveMinutes}`
         const disableToolbarMetrics =
-            !POSTHOG_MANAGED_HOSTS.includes(this.instance.get_config('api_host')) &&
-            this.instance.get_config('advanced_disable_toolbar_metrics')
+            !POSTHOG_MANAGED_HOSTS.includes(this.instance.config.api_host) &&
+            this.instance.config.advanced_disable_toolbar_metrics
 
         const toolbarParams = {
-            token: this.instance.get_config('token'),
+            token: this.instance.config.token,
             ...params,
             apiURL: host, // defaults to api_host from the instance config if nothing else set
             ...(disableToolbarMetrics ? { instrument: false } : {}),
diff --git a/src/extensions/web-performance.ts b/src/extensions/web-performance.ts
index fa2f39afd..dab51fa6b 100644
--- a/src/extensions/web-performance.ts
+++ b/src/extensions/web-performance.ts
@@ -147,7 +147,7 @@ export class WebPerformanceObserver {
     }
 
     isEnabled() {
-        return this.instance.get_config('capture_performance') ?? this.remoteEnabled ?? false
+        return this.instance.config.capture_performance ?? this.remoteEnabled ?? false
     }
 
     afterDecideResponse(response: DecideResponse) {
@@ -160,8 +160,8 @@ export class WebPerformanceObserver {
     _capturePerformanceEvent(event: PerformanceEntry) {
         // NOTE: We don't want to capture our own request events.
 
-        if (event.name.indexOf(this.instance.get_config('api_host')) === 0) {
-            const path = event.name.replace(this.instance.get_config('api_host'), '')
+        if (event.name.indexOf(this.instance.config.api_host) === 0) {
+            const path = event.name.replace(this.instance.config.api_host, '')
 
             if (POSTHOG_PATHS_TO_IGNORE.find((x) => path.indexOf(x) === 0)) {
                 return
@@ -174,7 +174,7 @@ export class WebPerformanceObserver {
             url: event.name,
         }
 
-        const userSessionRecordingOptions = this.instance.get_config('session_recording')
+        const userSessionRecordingOptions = this.instance.config.session_recording
 
         if (userSessionRecordingOptions.maskNetworkRequestFn) {
             networkRequest = userSessionRecordingOptions.maskNetworkRequestFn(networkRequest)
diff --git a/src/gdpr-utils.ts b/src/gdpr-utils.ts
index 51246f4f1..6d40f0a56 100644
--- a/src/gdpr-utils.ts
+++ b/src/gdpr-utils.ts
@@ -214,11 +214,11 @@ export function userOptedOut(posthog: PostHog, silenceErrors: boolean | undefine
     let optedOut = false
 
     try {
-        const token = posthog.get_config('token')
-        const respectDnt = posthog.get_config('respect_dnt')
-        const persistenceType = posthog.get_config('opt_out_capturing_persistence_type')
-        const persistencePrefix = posthog.get_config('opt_out_capturing_cookie_prefix') || undefined
-        const win = posthog.get_config('window' as any) as Window | undefined // used to override window during browser tests
+        const token = posthog.config.token
+        const respectDnt = posthog.config.respect_dnt
+        const persistenceType = posthog.config.opt_out_capturing_persistence_type
+        const persistencePrefix = posthog.config.opt_out_capturing_cookie_prefix || undefined
+        const win = (posthog.config as any).window as Window | undefined // used to override window during browser tests
 
         if (token) {
             // if there was an issue getting the token, continue method execution as normal
diff --git a/src/posthog-core.ts b/src/posthog-core.ts
index 02899a09d..58b39b775 100644
--- a/src/posthog-core.ts
+++ b/src/posthog-core.ts
@@ -117,11 +117,10 @@ const defaultConfig = (): PostHogConfig => ({
     custom_campaign_params: [],
     custom_blocked_useragents: [],
     save_referrer: true,
-    test: false,
-    verbose: false,
     capture_pageview: true,
     capture_pageleave: true, // We'll only capture pageleave events if capture_pageview is also true
     debug: false,
+    verbose: false,
     cookie_expiration: 365,
     upgrade: false,
     disable_session_recording: false,
@@ -217,19 +216,19 @@ const create_phlib = function (
     instance.webPerformance = new WebPerformanceObserver(instance)
     instance.webPerformance.startObservingIfEnabled()
 
-    if (instance.get_config('__preview_measure_pageview_stats')) {
+    if (instance.config.__preview_measure_pageview_stats) {
         instance.pageViewManager.startMeasuringScrollPosition()
     }
 
     instance.exceptionAutocapture = new ExceptionObserver(instance)
 
-    instance.__autocapture = instance.get_config('autocapture')
+    instance.__autocapture = instance.config.autocapture
     autocapture._setIsAutocaptureEnabled(instance)
     if (autocapture._isAutocaptureEnabled) {
-        instance.__autocapture = instance.get_config('autocapture')
+        instance.__autocapture = instance.config.autocapture
         const num_buckets = 100
         const num_enabled_buckets = 100
-        if (!autocapture.enabledForProject(instance.get_config('token'), num_buckets, num_enabled_buckets)) {
+        if (!autocapture.enabledForProject(instance.config.token, num_buckets, num_enabled_buckets)) {
             instance.__autocapture = false
             logger.log('Not in active bucket: disabling Automatic Event Collection.')
         } else if (!autocapture.isBrowserSupported()) {
@@ -242,7 +241,7 @@ const create_phlib = function (
 
     // if any instance on the page has debug = true, we set the
     // global debug to be true
-    Config.DEBUG = Config.DEBUG || instance.get_config('debug')
+    Config.DEBUG = Config.DEBUG || instance.config.debug
 
     // if target is not defined, we called init after the lib already
     // loaded, so there won't be an array of things to execute
@@ -434,7 +433,7 @@ export class PostHog {
         this.persistence = new PostHogPersistence(this.config)
 
         this._requestQueue = new RequestQueue(this._handle_queued_event.bind(this))
-        this._retryQueue = new RetryQueue(this.get_config('on_xhr_error'), this.rateLimiter)
+        this._retryQueue = new RetryQueue(this.config.on_xhr_error, this.rateLimiter)
         this.__captureHooks = []
         this.__request_queue = []
 
@@ -464,7 +463,7 @@ export class PostHog {
         }
 
         if (config.bootstrap?.distinctID !== undefined) {
-            const uuid = this.get_config('get_device_id')(uuidv7())
+            const uuid = this.config.get_device_id(uuidv7())
             const deviceID = config.bootstrap?.isIdentifiedID ? uuid : config.bootstrap.distinctID
             this.persistence.set_user_state(config.bootstrap?.isIdentifiedID ? 'identified' : 'anonymous')
             this.register({
@@ -498,7 +497,7 @@ export class PostHog {
             // There is no need to set the distinct id
             // or the device id if something was already stored
             // in the persitence
-            const uuid = this.get_config('get_device_id')(uuidv7())
+            const uuid = this.config.get_device_id(uuidv7())
             this.register_once(
                 {
                     distinct_id: uuid,
@@ -525,13 +524,13 @@ export class PostHog {
         // Pause `reloadFeatureFlags` calls in config.loaded callback.
         // These feature flags are loaded in the decide call made right
         // afterwards
-        const disableDecide = this.get_config('advanced_disable_decide')
+        const disableDecide = this.config.advanced_disable_decide
         if (!disableDecide) {
             this.featureFlags.setReloadingPaused(true)
         }
 
         try {
-            this.get_config('loaded')(this)
+            this.config.loaded(this)
         } catch (err) {
             console.error('`loaded` function failed', err)
         }
@@ -540,7 +539,7 @@ export class PostHog {
 
         // this happens after so a user can call identify in
         // the loaded callback
-        if (this.get_config('capture_pageview')) {
+        if (this.config.capture_pageview) {
             this.capture('$pageview', { title: document.title }, { send_instantly: true })
         }
 
@@ -558,7 +557,7 @@ export class PostHog {
 
     _start_queue_if_opted_in(): void {
         if (!this.has_opted_out_capturing()) {
-            if (this.get_config('request_batching')) {
+            if (this.config.request_batching) {
                 this._requestQueue?.poll()
             }
         }
@@ -601,7 +600,7 @@ export class PostHog {
             // callback string to reflect that.
             const jsc = this._jsc
             const randomized_cb = '' + Math.floor(Math.random() * 100000000)
-            const callback_string = this.get_config('callback_fn') + '[' + randomized_cb + ']'
+            const callback_string = this.config.callback_fn + '[' + randomized_cb + ']'
             jsc[randomized_cb] = function (response: any) {
                 delete jsc[randomized_cb]
                 callback(response, data)
@@ -611,14 +610,14 @@ export class PostHog {
     }
 
     _handle_unload(): void {
-        if (!this.get_config('request_batching')) {
-            if (this.get_config('capture_pageview') && this.get_config('capture_pageleave')) {
+        if (!this.config.request_batching) {
+            if (this.config.capture_pageview && this.config.capture_pageleave) {
                 this.capture('$pageleave', null, { transport: 'sendBeacon' })
             }
             return
         }
 
-        if (this.get_config('capture_pageview') && this.get_config('capture_pageleave')) {
+        if (this.config.capture_pageview && this.config.capture_pageleave) {
             this.capture('$pageleave')
         }
 
@@ -655,9 +654,9 @@ export class PostHog {
         }
 
         const DEFAULT_OPTIONS = {
-            method: this.get_config('api_method'),
-            transport: this.get_config('api_transport'),
-            verbose: this.get_config('verbose'),
+            method: this.config.api_method,
+            transport: this.config.api_transport,
+            verbose: this.config.verbose,
         }
 
         options = _extend(DEFAULT_OPTIONS, options || {})
@@ -667,7 +666,7 @@ export class PostHog {
 
         const useSendBeacon = 'sendBeacon' in window.navigator && options.transport === 'sendBeacon'
         url = addParamsToURL(url, options.urlQueryArgs || {}, {
-            ip: this.get_config('ip'),
+            ip: this.config.ip,
         })
 
         if (useSendBeacon) {
@@ -684,12 +683,12 @@ export class PostHog {
                 xhr({
                     url: url,
                     data: data,
-                    headers: this.get_config('xhr_headers'),
+                    headers: this.config.xhr_headers,
                     options: options,
                     callback,
                     retriesPerformedSoFar: 0,
                     retryQueue: this._retryQueue,
-                    onXHRError: this.get_config('on_xhr_error'),
+                    onXHRError: this.config.on_xhr_error,
                     onResponse: this.rateLimiter.checkForLimiting,
                 })
             } catch (e) {
@@ -854,17 +853,17 @@ export class PostHog {
             return
         }
 
-        if (_isBlockedUA(userAgent, this.get_config('custom_blocked_useragents'))) {
+        if (_isBlockedUA(userAgent, this.config.custom_blocked_useragents)) {
             return
         }
 
         // update persistence
         this.sessionPersistence.update_search_keyword()
 
-        if (this.get_config('store_google')) {
+        if (this.config.store_google) {
             this.sessionPersistence.update_campaign_params()
         }
-        if (this.get_config('save_referrer')) {
+        if (this.config.save_referrer) {
             this.sessionPersistence.update_referrer_info()
         }
 
@@ -879,26 +878,19 @@ export class PostHog {
             data['$set_once'] = options['$set_once']
         }
 
-        data = _copyAndTruncateStrings(
-            data,
-            options._noTruncate ? null : this.get_config('properties_string_max_length')
-        )
+        data = _copyAndTruncateStrings(data, options._noTruncate ? null : this.config.properties_string_max_length)
         data.timestamp = options.timestamp || new Date()
 
-        if (this.get_config('debug')) {
+        if (this.config.debug) {
             logger.log('PostHog.js send', data)
         }
         const jsonData = JSON.stringify(data)
 
-        const url = this.get_config('api_host') + (options.endpoint || '/e/')
+        const url = this.config.api_host + (options.endpoint || '/e/')
 
         const has_unique_traits = options !== __NOOPTIONS
 
-        if (
-            this.get_config('request_batching') &&
-            (!has_unique_traits || options._batchKey) &&
-            !options.send_instantly
-        ) {
+        if (this.config.request_batching && (!has_unique_traits || options._batchKey) && !options.send_instantly) {
             this._requestQueue.enqueue(url, data, options)
         } else {
             this.__compress_and_send_json_request(url, jsonData, options)
@@ -926,7 +918,7 @@ export class PostHog {
         // set defaults
         const start_timestamp = this.persistence.remove_event_timer(event_name)
         let properties = { ...event_properties }
-        properties['token'] = this.get_config('token')
+        properties['token'] = this.config.token
 
         if (event_name === '$snapshot') {
             const persistenceProps = { ...this.persistence.properties(), ...this.sessionPersistence.properties() }
@@ -942,7 +934,7 @@ export class PostHog {
             properties['$window_id'] = windowId
         }
 
-        if (this.get_config('__preview_measure_pageview_stats')) {
+        if (this.config.__preview_measure_pageview_stats) {
             let performanceProperties: Record<string, any> = {}
             if (event_name === '$pageview') {
                 performanceProperties = this.pageViewManager.doPageView()
@@ -983,7 +975,7 @@ export class PostHog {
             properties
         )
 
-        const property_blacklist = this.get_config('property_blacklist')
+        const property_blacklist = this.config.property_blacklist
         if (_isArray(property_blacklist)) {
             _each(property_blacklist, function (blacklisted_prop) {
                 delete properties[blacklisted_prop]
@@ -992,7 +984,7 @@ export class PostHog {
             console.error('Invalid value for property_blacklist config: ' + property_blacklist)
         }
 
-        const sanitize_properties = this.get_config('sanitize_properties')
+        const sanitize_properties = this.config.sanitize_properties
         if (sanitize_properties) {
             properties = sanitize_properties(properties, event_name)
         }
@@ -1432,7 +1424,7 @@ export class PostHog {
         this.sessionPersistence?.clear()
         this.persistence?.set_user_state('anonymous')
         this.sessionManager?.resetSessionId()
-        const uuid = this.get_config('get_device_id')(uuidv7())
+        const uuid = this.config.get_device_id(uuidv7())
         this.register_once(
             {
                 distinct_id: uuid,
@@ -1687,10 +1679,10 @@ export class PostHog {
         if (_isObject(config)) {
             _extend(this.config, config)
 
-            if (!this.get_config('persistence_name')) {
+            if (!this.config.persistence_name) {
                 this.config.persistence_name = this.config.cookie_name
             }
-            if (!this.get_config('disable_persistence')) {
+            if (!this.config.disable_persistence) {
                 this.config.disable_persistence = this.config.disable_cookie
             }
 
@@ -1700,7 +1692,7 @@ export class PostHog {
             if (localStore.is_supported() && localStore.get('ph_debug') === 'true') {
                 this.config.debug = true
             }
-            if (this.get_config('debug')) {
+            if (this.config.debug) {
                 Config.DEBUG = true
             }
 
@@ -1749,13 +1741,6 @@ export class PostHog {
         return this.toolbar.loadToolbar(params)
     }
 
-    /**
-     * returns the current config object for the library.
-     */
-    get_config<K extends keyof PostHogConfig>(prop_name: K): PostHogConfig[K] {
-        return this.config?.[prop_name]
-    }
-
     /**
      * Returns the value of the super property named property_name. If no such
      * property is set, get_property() will return the undefined value.
@@ -1802,7 +1787,7 @@ export class PostHog {
     }
 
     toString(): string {
-        let name = this.get_config('name') ?? PRIMARY_INSTANCE_NAME
+        let name = this.config.name ?? PRIMARY_INSTANCE_NAME
         if (name !== PRIMARY_INSTANCE_NAME) {
             name = PRIMARY_INSTANCE_NAME + '.' + name
         }
@@ -1811,7 +1796,7 @@ export class PostHog {
 
     // perform some housekeeping around GDPR opt-in/out state
     _gdpr_init(): void {
-        const is_localStorage_requested = this.get_config('opt_out_capturing_persistence_type') === 'localStorage'
+        const is_localStorage_requested = this.config.opt_out_capturing_persistence_type === 'localStorage'
 
         // try to convert opt-in/out cookies to localStorage if possible
         if (is_localStorage_requested && localStore.is_supported()) {
@@ -1836,11 +1821,11 @@ export class PostHog {
             //       used as an initial state while GDPR information is being collected
         } else if (
             !this.has_opted_in_capturing() &&
-            (this.get_config('opt_out_capturing_by_default') || cookieStore.get('ph_optout'))
+            (this.config.opt_out_capturing_by_default || cookieStore.get('ph_optout'))
         ) {
             cookieStore.remove('ph_optout')
             this.opt_out_capturing({
-                clear_persistence: this.get_config('opt_out_persistence_by_default'),
+                clear_persistence: this.config.opt_out_persistence_by_default,
             })
         }
     }
@@ -1861,10 +1846,10 @@ export class PostHog {
             return
         }
 
-        if (!this.get_config('disable_persistence') && this.persistence?.disabled !== disabled) {
+        if (!this.config.disable_persistence && this.persistence?.disabled !== disabled) {
             this.persistence?.set_disabled(disabled)
         }
-        if (!this.get_config('disable_persistence') && this.sessionPersistence?.disabled !== disabled) {
+        if (!this.config.disable_persistence && this.sessionPersistence?.disabled !== disabled) {
             this.sessionPersistence?.set_disabled(disabled)
         }
     }
@@ -1877,11 +1862,11 @@ export class PostHog {
         options = _extend(
             {
                 capture: this.capture.bind(this),
-                persistence_type: this.get_config('opt_out_capturing_persistence_type'),
-                cookie_prefix: this.get_config('opt_out_capturing_cookie_prefix'),
-                cookie_expiration: this.get_config('cookie_expiration'),
-                cross_subdomain_cookie: this.get_config('cross_subdomain_cookie'),
-                secure_cookie: this.get_config('secure_cookie'),
+                persistence_type: this.config.opt_out_capturing_persistence_type,
+                cookie_prefix: this.config.opt_out_capturing_cookie_prefix,
+                cookie_expiration: this.config.cookie_expiration,
+                cross_subdomain_cookie: this.config.cross_subdomain_cookie,
+                secure_cookie: this.config.secure_cookie,
             },
             options || {}
         )
@@ -1891,7 +1876,7 @@ export class PostHog {
             options['persistence_type'] = 'cookie'
         }
 
-        return func(this.get_config('token'), {
+        return func(this.config.token, {
             capture: options['capture'],
             captureEventName: options['capture_event_name'],
             captureProperties: options['capture_properties'],
diff --git a/src/posthog-featureflags.ts b/src/posthog-featureflags.ts
index 0e3a40a0f..4b9e3f873 100644
--- a/src/posthog-featureflags.ts
+++ b/src/posthog-featureflags.ts
@@ -168,7 +168,7 @@ export class PostHogFeatureFlags {
 
     _reloadFeatureFlagsRequest(): void {
         this.setReloadingPaused(true)
-        const token = this.instance.get_config('token')
+        const token = this.instance.config.token
         const personProperties = this.instance.get_property(STORED_PERSON_PROPERTIES_KEY)
         const groupProperties = this.instance.get_property(STORED_GROUP_PROPERTIES_KEY)
         const json_data = JSON.stringify({
@@ -178,12 +178,12 @@ export class PostHogFeatureFlags {
             $anon_distinct_id: this.$anon_distinct_id,
             person_properties: personProperties,
             group_properties: groupProperties,
-            disable_flags: this.instance.get_config('advanced_disable_feature_flags') || undefined,
+            disable_flags: this.instance.config.advanced_disable_feature_flags || undefined,
         })
 
         const encoded_data = _base64Encode(json_data)
         this.instance._send_request(
-            this.instance.get_config('api_host') + '/decide/?v=3',
+            this.instance.config.api_host + '/decide/?v=3',
             { data: encoded_data },
             { method: 'POST' },
             this.instance._prepare_callback((response) => {
@@ -350,9 +350,7 @@ export class PostHogFeatureFlags {
 
         if (!existing_early_access_features || force_reload) {
             this.instance._send_request(
-                `${this.instance.get_config('api_host')}/api/early_access_features/?token=${this.instance.get_config(
-                    'token'
-                )}`,
+                `${this.instance.config.api_host}/api/early_access_features/?token=${this.instance.config.token}`,
                 {},
                 { method: 'GET' },
                 (response) => {
diff --git a/src/posthog-surveys.ts b/src/posthog-surveys.ts
index aab07708e..a050b5349 100644
--- a/src/posthog-surveys.ts
+++ b/src/posthog-surveys.ts
@@ -13,7 +13,7 @@ export class PostHogSurveys {
         const existingSurveys = this.instance.get_property(SURVEYS)
         if (!existingSurveys || forceReload) {
             this.instance._send_request(
-                `${this.instance.get_config('api_host')}/api/surveys/?token=${this.instance.get_config('token')}`,
+                `${this.instance.config.api_host}/api/surveys/?token=${this.instance.config.token}`,
                 {},
                 { method: 'GET' },
                 (response) => {
diff --git a/src/types.ts b/src/types.ts
index 7f6df8399..7fd90f86e 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -75,7 +75,6 @@ export interface PostHogConfig {
     // defaults to the empty array
     custom_blocked_useragents: string[]
     save_referrer: boolean
-    test: boolean
     verbose: boolean
     capture_pageview: boolean
     capture_pageleave: boolean