Editor loop why is it causing 452 ms delay?

Hi,
I have spotted a lag issue in my game and upon investigation it appears that "Editor loop" is causing a massive delay. The delay occurs when one of the methods is called "StartBuildingPlacement()" but it appears only to have only 0.5ms delay while the Editor loop spikes in total usage intensity. The Event loop stays above 70% total usage at all times - is that good? I am new to profiling but the issue I have is that testing the game in the editor became tedious because of it. I updated the project to the latest Unity version 2019.2 but nothing has changed.
What can I do about Event loop high time lag?

I attach a screenshot of the profiler window.

Thanks,
Peter

 

Thank you for a very quick answer. You're the best! I have found out an issue by an asset "NINEVA STUDIOS Project/Hierarchy Stickies". After deleting delays are gone. Thanks to the Profile Editor I have found that there is a massive amount of calls to refresh the editor.
Thanks again!

 

I don't know why but it works for me

 

Maybe this will help someone:

Go to: Windows > Analysis > Profiler
Select CPU Usage and also Switch on the top of the Profiler to "Edit Mode"
Start the Game and press the Record Button in the Profiler. Press it again after you see some spikes appear.
Investigate the Spikes and go down in the Hierachy of the Profiler to see the source of the high % values.

For me it was because my Editor had more than 40 property windows (of ScriptableObjects, GameObjects etc.) opened in the Background.
(Found in the Hierachy under: EditorLoop > Application.Tick > Application.UpdateScene > UpdateSceneIfNeeded > UpdateScene > GUIView.RepaintAll.PlayerLoopController > PropertyEditor.Paint)


So I went to: Windows > Layout > Default. And my GC Alloc went from 122k calls down to 12k (Unity 2021.3.22f1)

 

itorrri's solution #5 worked for me, too.

My Unity version is 2020.3.28f Personal on Windows 10.

Application.targetFrameRate = 120;

What's this??? I think this trick can't be a (at least, proper) solution for these problem, right? I think this is bug or defect of the editor...well, I'm not really sure tho.

 

got same issue, and this "random" 1 liner fixed it. I changed nothing else. Had spikes (Lags) of 0.5s, and profiler showed editor like OP.

Code (CSharp):

1. Application.targetFrameRate = 120;

I might be a different issue, but same effect, I too got: "Profile Editor showed a massive amount of calls to refresh the editor."

Update: After removing the "Application.target.." code again, it still works without lags. Might it be, that the framerate code triggers an internal Unity update/compilation that solves it somehow?

 

Hello Martin, I have used the profile editor toggle to find out what slowing down the editor performance sometimes, and I have found an interesting observation:
When the problem occurs It was only when one of my monobehaviour script was selected and showed in the inspector.
With the profiler, I was able to find that there was massive unwanted binding to serializedproperties with UIElements. (the script contains many big arrays used for mesh generation)
Those arrays has an [HideInInspector] attribute on them (so normally no binding...) but after replacing this attribute with a [System.NonSerialized], all the unwanted binding was gone, and the editor performance come back to a normal usable state
Maybe could you report that to the adequate team ?

 

I've created a simple repro project and submitted a new Bug Report with it. I'm waiting for an answer

 

Yeah, I was thinking something like that too
The bug report is currently in review.