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Fixed in 2018.2.X

Fixed in 2018.1.X

Votes

6

Found in

2018.1.0a7

2018.1.0b1

Issue ID

983582

Regression

Yes

Random spikes in CPU usage in runtime caused by Physics.Processing

Physics

-

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

Expected results:
Smooth performance with no unexpected spikes in CPU usage
Actual results:
Physics.Processing CPU usage spikes at random moments

Reproduced in: 2018.2.0a1, 2018.1.0b2, 2018.1.0a7
Didn’t reproduce in 2018.1.0a6, 2017.3.0p1
Regression introduced in: 2018.1.0a7

Fixed in: 2018.2.0a6, 2018.1.0b13

Comments (34)

  1. sylvainbergeon

    Jan 31, 2019 08:44

    Similar issue with 2018.3.3f1

    PlayerLoop.FixedUpdate.PhysicsFixedUpdate is eating 50% of my process ...

  2. xiaomo0809

    May 15, 2018 00:27

    I was able to reproduce this issue in 2018.1.0f2.

  3. A_Savvidis

    Apr 01, 2018 07:00

    According to release notes, in 2018.1.0b13
    "Physics: Fixed issue resulting in frame CPU spikes in physics. (983582)"

  4. wallazz

    Mar 22, 2018 10:25

    In what version is this problem fixed?

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