diff --git a/test/performance.test.ts b/test/performance.test.ts
index 5c34b7f77ec..44a50197c3d 100644
--- a/test/performance.test.ts
+++ b/test/performance.test.ts
@@ -2,14 +2,16 @@ import {
     createRxDatabase,
     randomToken,
     overwritable,
-    requestIdlePromise
+    requestIdlePromise,
+    RxCollection
 } from '../plugins/core/index.mjs';
 import * as assert from 'assert';
 import {
     schemaObjects,
     schemas,
     isFastMode,
-    isDeno
+    isDeno,
+    AverageSchemaDocumentType
 } from '../plugins/test-utils/index.mjs';
 import config from './unit/config.ts';
 import { wait } from 'async-test-util';
@@ -71,6 +73,7 @@ describe('performance.test.ts', () => {
             // create database
             const dbName = 'test-db-performance-' + randomToken(10);
             const schema = schemas.averageSchema();
+            let collection: RxCollection<AverageSchemaDocumentType>;
             async function createDbWithCollections() {
                 if (collection) {
                     await collection.database.close();
@@ -112,7 +115,7 @@ describe('performance.test.ts', () => {
                 await collections[collectionNames[1]].insert(schemaObjects.averageSchemaData());
                 return collections[firstCollectionName];
             }
-            let collection = await createDbWithCollections();
+            collection = await createDbWithCollections();
             updateTime('time-to-first-insert');
             await awaitBetweenTest();
 
diff --git a/test/unit/attachments.test.ts b/test/unit/attachments.test.ts
index 40b8da6ea20..cf083c08147 100644
--- a/test/unit/attachments.test.ts
+++ b/test/unit/attachments.test.ts
@@ -315,9 +315,6 @@ describeParallel('attachments.test.ts', () => {
             let x = 10;
             const attachmentIds: string[] = [];
             const promises: Promise<any>[] = [];
-            console.log('######################################');
-            console.log('######################################');
-            console.log('######################################');
             while (x > 0) {
                 x--;
                 if (randomBoolean()) {
@@ -330,7 +327,6 @@ describeParallel('attachments.test.ts', () => {
                             type: 'text/plain'
                         }).then((attachment) => {
                             attachment.getStringData();
-                            console.log('stored: ' + id);
                             attachmentIds.push(id);
                         })
                     );
@@ -343,10 +339,8 @@ describeParallel('attachments.test.ts', () => {
                                 if (!id) {
                                     await promiseWait(10);
                                 } else {
-                                    console.log('start read: ' + id);
                                     const attachment = doc.getLatest().getAttachment(id);
                                     await ensureNotFalsy(attachment, 'missing attachment ' + id).getData();
-                                    console.log('got');
                                     break;
                                 }
                             }
diff --git a/test/unit/config.ts b/test/unit/config.ts
index d5aefe312f2..75c892cc81a 100644
--- a/test/unit/config.ts
+++ b/test/unit/config.ts
@@ -67,7 +67,7 @@ export function getStorage(storageKey: string): RxTestStorage {
                     };
                 },
                 hasPersistence: true,
-                hasMultiInstance: false,
+                hasMultiInstance: true,
                 hasAttachments: true,
                 hasReplication: true
             };