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Fixed in 2020.3.48f1, 2022.2.16f1, 2023.1.0b11, 2023.2.0a6
Under Consideration for 2021.3.X
Votes
0
Found in
2020.3.45f1
2021.3.20f1
2022.2.8f1
2023.1.0b5
2023.2.0a6
Issue ID
UUM-28636
Regression
No
Timeline performance problem when previewing animated prefab instances
SceneTracker::FlushDirty ensures that we record Prefab instance overrides for dirty objects.
A user can change a property and mark the object dirty and expect that overides are automatically being recorded.
This logic is causing problems for Timeline which are often animating 1000s of Transforms while also marking the transforms dirty.
It has shown that this costs around 1000 ms when previewing animations for the Enemies demo.
See detailed discussion in this slack thread: https://unity.slack.com/archives/C06TQFQ7P/p1675800164129839
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