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Fixed in 2018.3.X
Votes
1
Found in
2017.3.0f3
Issue ID
981387
Regression
Yes
ParticleSystem.Update produces low performance when VR is enabled
To reproduce:
1. Open the attached project;
2. Open "Bug" scene;
3. Make sure Virtual Reality is enabled (Edit > Project Settings > Player > XR Settings);
4. Enter Play mode;
5. Find the ParticleSystem.Update in the Profiler
Expected result: ParticleSystem.Update takes ~0.00ms.
Actual result: ParticleSystem.Update takes multiple ms and produces low performance when VR is enabled.
Reproduced on versions: 2017.3.0f3, 2017.3.0p1, 2018.1.0a7.
Not reproduced on versions: 2017.2.1p1, 2017.3.0f2.
By design: We cannot simulate the particle system until the previous frame is finished drawing it (otherwise we risk modifying data that the render thread is still using).
VERIFIED Fixed 2018.3.0b5
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Nikodemus
May 28, 2019 13:46
This is still an issue in 2019.2.03b!