Search Issue Tracker
Fixed in 2021.1.X
Duplicate in 2021.3.X
Votes
0
Found in
2019.4
2021.1
2021.2.11f1
2021.3
2022.1
2022.2
Issue ID
1402978
Regression
No
Semaphore.WaitForSignal degrades Editor performance when entering Play Mode
How to reproduce:
1. Create a new empty project
2. Open the Profiler window (Window -> Analysis -> Profiler)
3. Enter Play Mode
4. Focus the Profiler Window
Expected result: Stable and consistent performance of the Editor
Actual result: Semaphore.WaitForSignal degrades the performance of the Editor
Reproducible with: 2019.4.38f1, 2021.1.21f1, 2021.3.1f1, 2022.1.0f1, 2022.2.0a11
Not Reproducible with: 2020.3.33f1, 2021.1.22f1, 2021.1.28f1
Note:
- Using the VR Template, performance is twice as bad
- Performance of the PlayerLoop in 2021.3 sways between 10.0ms and ~15.0ms
- Performance of the PlayerLoop in 2022.1 is significantly better, but performance is still visibly affected (~5.0ms)
- Performance of the PlayerLoop in 2021.1.28f1 sways between 0.3ms and 3.0ms
Comments (3)
-
LordCainen
Jul 20, 2023 13:56
I am encountering this same performance issue in 2022.3.5 lts as well.
-
BrianDuffyGames
Jan 19, 2023 20:10
Seconding the above comment, what's going on with bug fixes not being carried forward to newer versions?
-
Charlicopter
May 08, 2022 21:04
This bug has crippled my project (I'm on 2021.3 LTS + OpenXR) - Is there a way to get information as to if/when the fixes will come to LTS? I'm not sure I understand why 2021.1 got the fix, but not 2021.3...
Add comment
All about bugs
View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.
Latest issues
- PlayerPrefs get corrupted when a minimized fullscreen Player is closed through the Taskbar
- "To Debug, run app with -diag-job-temp-memory-leak-validation cmd line argument. This will output the callstacks of the leaked allocations." warning is printed when JobTempMemoryLeakValidation switch is enabled
- Main Thread stalling when loading Audio Source asset asynchronously while preloading another Audio Source asset
- Material artifacts occur in the Material Preview window when baked lighting is applied to scenes
- “ArgumentOutOfRangeException” after saving, reseting and re-add Default Tile Palette Tools to the list in Preferences window
Resolution Note (fix version 2021.1):
Fixed in: 2021.1.22f1