Revert "Run all drain updates together"

This reverts commit c67dba1.

Content.Server/Fluids/EntitySystems/DrainSystem.cs

@@ -34,9 +34,6 @@ public sealed class DrainSystem : SharedDrainSystem
     [Dependency] private readonly IRobustRandom _random = default!;
     [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
 
-    private float DrainRunPeriod = 1f; // 1 second to make multiplying by DrainFrequency correct
-    private float Accumulator;
-
     public override void Initialize()
     {
         base.Initialize();
@@ -111,14 +108,7 @@ private void Empty(EntityUid container, SpillableComponent spillable, EntityUid
 
     public override void Update(float frameTime)
     {
-        Accumulator += frameTime;
-        if (Accumulator < DrainRunPeriod)
-        {
-            return;
-        }
-        Accumulator -= DrainRunPeriod;
-
-        base.Update(DrainRunPeriod);
+        base.Update(frameTime);
         var managerQuery = GetEntityQuery<SolutionContainerManagerComponent>();
         var xformQuery = GetEntityQuery<TransformComponent>();
         var puddleQuery = GetEntityQuery<PuddleComponent>();
@@ -127,6 +117,13 @@ public override void Update(float frameTime)
         var query = EntityQueryEnumerator<DrainComponent>();
         while (query.MoveNext(out var uid, out var drain))
         {
+            drain.Accumulator += frameTime;
+            if (drain.Accumulator < drain.DrainFrequency)
+            {
+                continue;
+            }
+            drain.Accumulator -= drain.DrainFrequency;
+
             // Disable ambient sound from emptying manually
             if (!drain.AutoDrain)
             {