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Fixed
Unknown (hidden) 2021.3.X, 2022.1.X, 2022.2.X, 2022.3.X
Fixed in 2020.3.41f1, 2021.3.8f1
Votes
6
Found in
2020.3.35f1
2021.3.4f1
Issue ID
UUM-7568
Regression
No
Loading a scene with a large amount of light probes causes a performance spike
Steps to reproduce:
- Download and open user attached project (lightmaptest.zip)
- Open the "startingscene" scene & the profiler
- Start play mode
- Press "T" key to load using Additive
- Observe spike in profiler
- Stop play mode
- Repeat above, but press "Y" key to load using Single
Notes:
- We thought that is reproduces in 2021.3.5f1, 2022.1.7f1, 2022.2.0a13, 2023.1.0a1, but that was only a "few milliseconds spike", not the "few seconds spike" the user is seeing.
- Both LoadSceneMode.Single and LoadSceneMode.Additive causes a performance spike
- PostLoadSceneStaticLightmapSettings seems to be the culprit (see attached screenshots)
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TimHeijden2
Jul 08, 2022 07:21
Discussion about this issue is ongoing:
https://forum.unity.com/threads/additively-loading-scene-with-large-amount-of-lightprobes-causes-massive-performance-spike.1295442/#post-8254749