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Fixed in Unity 2018.2

Votes

0

Found in

2017.3.0f3

Issue ID

983677

Regression

Yes

Massive performance drop with Size over Lifetime or Size over Speed modules enabled when emitting particles from script

Shuriken

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Priority: 2Necessary for shipping a final release

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Severity: 4Minor or cosmetic issue

Steps to reproduce:
1. Open attached “ParticlePerformance.zip” Unity project
2. Open Window->Profiler
3. Enter Play mode

Expected results:
Reasonable performance
Actual results:
Massive CPU usage by ParticleSystem.SizeOverVelocityModule and ParticleSystem.SizeOverLifetimeModule

Reproduced in: 2018.1.0b1, 2017.3.0p1 2017.3.0b1, 2017.2.1p1, 2017.2.0f2, 2017.1.3f1, 2017.1.2f1, 2017.1.1p4
Didn’t reproduce in: 2017.3.0a7, 2017.2.0f1, 2017.1.1p3, 5.6.5f1
Regression introduced in: 2017.3.0b1, 2017.2.0f2, 2017.1.1p4

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