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In Progress
Fix In Review for 2021.3.X
Under Consideration for 2020.3.X
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