Search Issue Tracker

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. GuillemSunyer

    Dec 28, 2021 19:53

    Still exists in 2020.3.25f1

  2. amiel_ace

    Jul 08, 2021 15:14

    this still exists as of today, in unity 2020.3.13f1

  3. GenialPP

    Jul 02, 2021 14:06

    Still exists in 2020.3.13f1

  4. JacobK

    Jun 10, 2021 14:29

    Seeing this in 2020.3.10f :(
    Physics.Processing spiking to 30ms, almost entirely self time

  5. rodrycode

    May 25, 2021 08:42

    Still exists in 2020.3.9f1

  6. Trungdv

    Mar 26, 2021 18:26

    Still happened in 2019.4.16f1

  7. OneManArmy3D

    Mar 21, 2021 03:43

    In 2020 LTS i constantly see 140ms Physics.Processing spikes.

  8. GreenPandaStudios

    Feb 24, 2021 14:00

    This is not fixed.

  9. studentvz

    Feb 11, 2021 17:42

    We made a detailed report on this issue, made a bug report and there is a new issue tracker. Help us expand this issue so it can be fixed.
    https://forum.unity.com/threads/unity-performance-regressions-cpu-usage-physics-proccesing-rendering-spikes-and-more.1056236/

  10. Zunno

    Jan 24, 2021 22:10

    Still exist in 2019.4.18

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.