[1.19.19] Almost full CPU usage and extremely lag at Windows build when downloading

[pillakirsten]

Hi @optimise thanks for posting this issue. We’re seeing a similar performance issue for 1.19.19 mentioned here:

Performance drop after upgrading to 2021.2.9

Hey all, just wanted to post what I know about this issue. It appears that there’s some pretty significant performance regressions in the Editor for 2021.2+, from what I understand. Igor, it’s interesting to me that you say 1.18.19 doesn’t have as many issues with performance as 1.19.19 does on that editor version. From what I’m hearing, the Editor performance is mainly affected by shaders and sprites. I can’t think of any fixes we’ve done involving shaders, but I do know we’ve fixed some bugs …

Could you share the Unity version that you are using?