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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
-
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...
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Resolution Note (fix version 2021.1):
Fixed in: 2021.1.22f1