Search Issue Tracker

Fixed in 2018.3.X



Found in


Issue ID




[Shuriken] Culled particle systems cause CPU spikes when re-entering view after some time

Visual Effects - Legacy


Steps to reproduce:
1. Open the attached project "" and the profiler window
2. Go into hierarchy and note that particles are looping, but Prewarm is DISABLED.
3. Start the Scene scene
4. Use the left/right arrows to rotate the camera, rotate the camera until the particles are not visible anymore
4. Let it run for 2+ minutes
5. Rotate the camera back to the particles, keeping an eye on the profiler
6. Notice spikes in Camera.Render.Culling.SceneCulling.CullSendEvents.ParticleSystem.Prewarm

Expected results: Prewarm does not build up over time
Actual results: It slowly build up

Comments (2)

  1. jparedes90

    Jun 16, 2020 21:38

    Not fixed in 2018.4.9 LTS

  2. duplexius

    Jul 24, 2016 14:32

    This is not fixed but turned out worse between version 5.3.4p2 and 5.3.4p4 and it's still in 5.3.6f1.
    I'm still using 5.3.4p2 because of this.

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.