Search Issue Tracker

Fixed in 2017.3.0f3

Fixed in 2017.1.X, 2017.2.X



Found in


Issue ID




[Shuriken] WaitForJobGroup causes huge FPS drop after upgrading from 5.6 to 2017.1

Visual Effects - Legacy


How to reproduce:
1. Download attached project file
2. Play the "Particles" scene

Expected result: Particles system works fine without causing FPS drop
Actual result: Particles system WaitForJobGroup causes huge FPS drop after 2 seconds of play (check attached image "01.png")

Reproduced with: 2017.1.0b1, 2017.1.0b10, 2017.1.0f3, 2017.2.0b3
Not reproduced with: 5.5.2f1. 5.6.0b11, 5.6.2p2, 2017.1.0a1,

Regression since: 2017.1.0b1

Comments (8)

  1. mercygaleria

    Jul 28, 2020 10:11;u=245304;u=19154;u=556429;;u=245305;;u=19155;u=556432;;u=556433;u=245302;;u=556434,,,,

  2. joe_ftg

    Jan 03, 2018 11:38

    Ok, further to my last comment - it only stalls when using meshes of Planes. Switching to Quads removed the stall.

  3. joe_ftg

    Jan 02, 2018 18:23

    In 2017.3.0f3 there is a stall in PreLateUpdate.ParticleSystemBehindUpdateAll -> ParticleSystem.Update when a particle effect is played but only if the particle renderer is of type Mesh.

  4. Sprawl

    Nov 12, 2017 15:09

    I am still having this issue in 2017.3.0b8 on Android.
    in the Profiler, it shows as PreLateUpdate.ParticleSystemBehinUpdateAll -> ParticleSystem.Update.

    It lags as soon as my particle system is moved.

  5. Peter77

    Oct 23, 2017 15:42

    I experienced various Shuriken Particle System performance issues in 2017.1, which didn't case any performance issue in earlier builds.

    Reporting those issues don't seem to make a difference. I mean, I had spent quite some time to create those reports, but it doesn't seem it's worth the time for Unity Technologies look at them.

    My workaround was to remove most Particle System's from the game. It's just frustrating to have another Unity feature that I can't make use of, because the performance is unacceptable.

  6. PieterAlbers

    Oct 12, 2017 14:45

    To add a bit more... I switched off the editor Metal support and the spike I saw/delay/drop was gone.

  7. PieterAlbers

    Oct 12, 2017 14:18

    Have this issue as well on 2017.1.2f1
    Funnily enough it is only on my MacBook. My Win machine doesn't show this at all.

  8. anunnaki2016

    Oct 05, 2017 15:33

    2017.1.1p4 have a bug nothing is fixed

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.