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Fixed in 2017.3.0f3
Fixed in 2017.1.X, 2017.2.X
Votes
24
Found in
5.6.0b11
Issue ID
930933
Regression
Yes
[Shuriken] WaitForJobGroup causes huge FPS drop after upgrading from 5.6 to 2017.1
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)
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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.
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.
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.
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.
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.
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.
anunnaki2016
Oct 05, 2017 15:33
2017.1.1p4 have a bug nothing is fixed