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Fix In Review for 2022.1.X
Fix In Review for 2019.4.X, 2021.1.X, 2021.2.X
Fixed in 2020.3.X
Votes
34
Found in
2019.4.29f1
2020.3.13f1
2021.1.10f1
2021.2
2022.1
Issue ID
1348763
Regression
Yes
Performance degradation when activating or deactivating uGUI GameObject
Reproduction steps:
1. Open the attached project "PerformanceBug.zip"
2. Open the "PerformanceTest" Scene
3. Open the Profiler (Window > Analysis > Profiler)
4. Enter Play Mode and record at least 50 frames
5. Exit Play Mode
6. Select the CPU Usage module in the Profiler
7. In the Profiler Hierarchy, navigate to "PlayerLoop > Update.ScriptRunBehaviourUpdate > BehaviourUpdate > PerformanceTest.Update"
8. Select a frame in the Timeline that contains the GameObject.Activate method
9. Observe the GameObject.Activate method's "Time ms" value
Expected result: time does not significantly increase
Actual result: time increases by a multiple of 2 or more
Reproducible with: 2019.4.29f1, 2020.3.13f1, 2020.3.14f1, 2021.1.10f1, 2021.1.16f1, 2021.2.0b5, 2022.1.0a3
Not reproducible with: 2019.4.28f1, 2020.1.0a1, 2020.3.12f1, 2021.1.0a1, 2021.1.9f1
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Alexander_Nasonov
Sep 09, 2021 07:23
We need this fix very much! Please fix! 2019.4 LTS.
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Sollaninn
Sep 09, 2021 07:18
2019.4 LTS need fix
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DLord
Sep 09, 2021 07:15
We need fix for 2019.4 LTS.
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GloriaVictis
Sep 07, 2021 11:20
2019.4 LTS fix pls!
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Resolution Note (fix version 2022.1):
Fix is ready, needs to land :)
Resolution Note (fix version 2020.3):
Fixed in: 2020.3.19f1