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Fixed in 2020.1.X

Fixed in 2018.4.X, 2019.3.X



Found in






Issue ID




Animator.Update CPU time spikes when multiple animations are playing



Steps to reproduce:
1. Download and open "Character with animation" scene
2. Enter play mode with open Profiler
3. Wait for 10 - 30 seconds

Actual results: Notice that Animators.Update spikes. On i7-6700k in the example project Animator.Update takes -2.5ms to calculate and when it spikes it takes 5-7ms to calculate.

Reproduced with: 2020.1.0a4, 2019.3.0b4, 2019.2.6f1, 2018.4.9f1
Not reproducible with: 2017.4.32f1

- Tested and reproduced in Standalone player

  1. Resolution Note (fix version 2019.3):


  2. Resolution Note (fix version 2018.4):

    Fixed in: 2018.4.27f1

Comments (15)

  1. kovutiger

    Sep 30, 2020 16:49

    VR Chat is also using this unity version which I am sure they know about. But the Dev's don't seem to acknowledge the issue.

  2. aresgameshk

    Jul 27, 2020 03:46

    Whats taking so long for the 2018 LTS fix? its already 2018.4.25 now and its still being reviewed? Did someone forget about this issue?

  3. FallenTreeGames

    Jul 16, 2020 11:44

    So 10 months after it was reported, this is still listed as a known issue in 2018 LTS?

  4. arnaldoneto

    Jul 13, 2020 16:12

    This is not fixed!

  5. 5minlab_dev

    Jul 10, 2020 01:48

    It said 'Fixed in: 2018.4.23f1'.
    but, this is still in 2018.4.24f1 Known Issues..
    Animation: Animator.Update CPU time spikes when multiple animations are playing (1184690)

  6. zbyhoo

    May 20, 2020 12:50

    2018.4.23 - fix still not available there...
    I'm pretty sure, that I saw a resolution note for 2018.4.23 here, but it disappeared.

    I beg you Unity, please fix it in 2018 LTS

  7. tcz8

    May 16, 2020 06:56

    2018.4.22 and this still isn't fixed.

    The guy assigned to the task marked it as solved. We may have to open a new ticket for anyone to look at this again.

  8. OmarVector

    Apr 29, 2020 23:34

    Is this bug reproduced on android build too or only windows standalone ?

  9. tcz8

    Apr 01, 2020 17:22

    You'd think the LTS versions would get priority patching.

  10. Jakub_Machowski

    Mar 17, 2020 09:44

    Hello thats still not fixed on 2018.4.19 LTS please fix that, asap.

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