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Fixed in 2022.1.X

Fixed in 2021.2.X



Found in



Issue ID




High polling rate mouse causes performance issues



Reproduction steps:
1. Open new Unity Project
2. Enter Play Mode
3. In Game View, rapidly move mouse around, with its polling set to 1000
4. In Profiler window, Editor mode, observe performance

Expected result: Performance does not slow down
Actual result: Editor performance slows down significantly

Reproducible with: Razer Viper Ultimate
Not reproducible with: Steel Series Rival 600, Steel Series Rival 110, Logitech G903, Razer Naga Chroma

Affected Unity versions: 2018.4.35f1, 2019.4.28f1, 2020.3.11f1, 2021.1.11f1

1. The issue is much lesser when outside of Play Mode or when moving the mouse around in a Build
2. The slowdown seems to be correlated to the polling rate of the mouse. Setting it to 100 nearly negates the issue.

  1. Resolution Note (fix version 2022.1):

    Fixed in 2022.1.0a6

  2. Resolution Note (fix version 2021.2):

    Fixed in: 2021.2.0b9

Comments (8)

  1. Erveon

    Jun 03, 2023 22:10

    Another vote for fixing this in 2020 LTS. It's impossible for us to upgrade major versions with how the engine has been "progression". High refresh mice are becoming more common so more players are having issues. No way to vote for an issue when it's "fixed" but only for some of the affected versions isn't great either.

  2. ohbado

    Oct 02, 2022 05:49

    This issue is not fixed on 2021.3.10f1 !
    I was the first to report this bug. This bug is happening again !

  3. Gustjc

    Sep 27, 2022 20:20

    Still present with 2021.3.8f1 LTS. Almost unusable at 1000 Hz. It's better with 125 Hz but it still have mini lag spikes every now and then. This issue should be a priority to fix on LTS versions. It really impacts the work.
    Reproducible with: Corsair Harpoon mouse

  4. stephc-int13

    Aug 12, 2022 18:34

    This issue is not fixed on 2021.3.5f1

    It can be seen both in Editor mode, gameplay mode and when playing a build.

    Mouse polling rate at 500hz or more severely impact framerate.
    At 125Hz the issue is much less noticeable but do not completely disappear.

  5. RudyTheDev

    Jun 28, 2022 13:01

    Does not appear to be fixed in 2021.3.5f1, but there's a new bug report at

  6. cwbeta

    Jun 28, 2022 08:17

    Still not fixed in Unity 2021.3.5f1 with Logitech GPW2.
    Why the issue is marked as FIXED?

  7. Glader

    Dec 13, 2021 03:32

    Hello, any update on the LONGTERM SUPPORT version fo 2020? It's not very usable with this bug present in my opinion.

  8. JoJa15

    Oct 25, 2021 17:10

    Is there a plan to fix this in the LTS version of 2020?

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