Bug Editor runs slow after a few minutes

I am using version 2020.3.30 and after a few minutes (5-10) the editer slows down and becomes unusable. I restart the editor and speed is back to normal but again after a few minutes it start to slow again. What is happening?

 

I would would profile the editor to see where the overhead is coming from.

 

It's not supposed to do that. Likely some asset you're using is running bogus editor code.

Another thing to note is that Unity can take up some memory. If your machine is close to running out of RAM, it will start paging its memory, which will create considerable waits. So check your available RAM and paging settings.

 

Thanks for help....i ran the profiler .... so the culprit looks to be Application.WaitForAsyncOperation....how do i fix this?

 

Seems your culprit is GC.MarkDependencies and GC in general, which points to a mass of objects created and abandoned in runtime.

This could be created by, say, a single asset stuck into a loop in which it's just creating objects.

Can you profile the memory and see who's doing it?

 

cf https://forum.unity.com/threads/how-to-avoid-gc-markdependencies.340906/

 

I think i fixed it by deleting a scene from the project that i wasnt using...

 

Just an idea, but a common cause for masses of unnecessary objects created is when working with large text files using simply concatenation (plus operator). Every concatenation creates a new object and this overloads GC in a flash. The correct way is to use a builder class of some kind.

 

@jaakkos...thanks for your help.

 

If you don't work on the scene or load it at runtime, I don't see how this could cause it.

 

@Jaakk0S ...you are right the problem is back....here is the memory profiler

 

I am not using large text files.

 

You probably want to enable deep profiling to get a further breakdown of what's happening.

 

i believe this is slowing th editor down but what is it?

 

Just a hunch but isn‘t AssetDatabase.Refresh() calling UnloadUnusedAssets internally? If so I would also check for editor scripts that needlessly call Refresh() everywhere „just because“.

My pet peeve: https://forum.unity.com/threads/cal...ory-reading-or-face-the-consequences.1330947/

 

Gents...I am 100% sure it is not one of my scripts...must be a script used by the editor...perhaps in a package....but how do i find which one?

And my mac has pleny of RAM remaining so that not the cause.

 

Ok the issue commences when i exit play mode .....

 

Your activity happens under GarbageCollectAssetsProfile, and @MartinTilo suggested that somebody is might be explicitly calling

Resources.UnloadUnusedAssets()

. You should run profiler with his suggestions to get more info. I suggest rgrep:ing (grep -r) your Assets folder and package cache directories for "UnloadUnusedAssets" to find which of your assets or packages are using that in the first place.

 

This would seem like the most probable thing that would cause a sudden extreme spike of asset loads. Somebody unintentionally triggering a scene load.

 

Thanks for your help everyone. I used the profiler as suggested (had to upgrade my version of unity) and now i get this error code after playmode...i am 100% sure this is the problem... how do i fix this? google came up with nothing.

 

@MartinTilo thanks for your help. Will do.

 

For anyone else that may have this error i fixed it by running the profiler and locating the problem file which was located in a temp folder in my library. It was using the AssetDatabase.Refresh line. Some assest must have put the file there. Anyway i deleted it, then upgraded visual pro to the latest version and issue went away.