Search Issue Tracker

Fixed in 2019.2

Duplicate in 2018.3

Fixed in 2018.3, 2019.1



Found in





Issue ID




[VR]EarlyUpdate.XRUpdate's CPU usage increases by about 2.4ms every 10minutes if the Unity Player isn't focused on



Steps to reproduce:

1. Create a new project
2. Enable VR
3. Build for standalone with "Development Build" and "Auto-Connect Profiler"
4. Run the build with an HMD attached
5. Open the profiler window
6. Make sure it is connected to the player
7. Leave the player running while unfocused for at least 20 minutes

Result: CPU usage spikes start occurring, player becomes laggy and continues to become worse as time goes on

Reproduced on 2017.4.0f1, 2017.4.17f1 2018.3.1f1, 2019.1.0a13

  1. Response avatar

    Resolution Note (fix version 2019.2):

    Fixed in 2018.3.10f1

Comments (32)

  1. 6efb5887362751b7bce3dd58952c8da5?d=mm


    Aug 20, 2019 13:11

    Brilliant outlined data. I thank you about that. Most likely it will be exceptionally helpful for my future ventures. Might want to see some different posts on the same subject!

  2. 69632cee18eeebb27afe281cf169df14?d=mm


    Aug 05, 2019 05:45

    This blog is very nice.I really like such a fantastic written blog.I will keep coming here again and again.Visit my link as well.

  3. 22d96f05a068f8123670fd333f840c74?d=mm


    Jun 13, 2019 06:05

    SAme problem with me the CPU usage is becoming very high and the heating issue are occurring due to it. I have forcefully stopped the application after that because it could have either damage my system. I have been checking for help.

  4. Efe79f65b219936f2d04856fe29b09ac?d=mm


    Apr 16, 2019 13:06

    Thanks for sharing this useful information, do continue to update and will catch up more on your website, please do visit my website

  5. 55254827963769e516617ee2c0688900?d=mm


    Mar 20, 2019 12:19

    My CPU hits 100% now. As a streamer I cannot have the game window always focused and I see the CPU increase on Unity games to the point that it destroys the frame rate in the HMD. I had to stop my stream today because of this issue. Please fix.

  6. F08983fcdf45e87ec3c3fd74ab302450?d=mm


    Mar 13, 2019 07:46

  7. F08983fcdf45e87ec3c3fd74ab302450?d=mm


    Mar 12, 2019 14:03

    This is an absolutely gamebreaking bug for us and people are giving us negative steam reviews & refunds because of this. PLEASE can we get this fix in 2018.3? Upgrading to 2018.3 has already probably cost us about a month of development time, we can't afford to do another full version upgrade.

  8. Ee1bc1d8b64c017e8213f138b7766c8f?d=mm


    Mar 12, 2019 11:35

    Another request for backport

  9. 103bfd00464041cc3415de0f801e16bb?d=mm


    Mar 04, 2019 01:49

    Please backport this fix to 2018.3. We really need this to be fixed for our application to work as intended.

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.