I have this problem ONLY on Big Sur, starting with RC2 and now with final version.
While moving mouse, it periodically freeze for about a half of second, and this is very annoying.
Another problem is: after restart or shuitdown, the time is decreased by two hours in BIOS.
This is my final hardware and software configuration. I was having a lot of trouble when I migrate from RX 580 to RX 5700 - OS X doesn't work and re-installation of OS doesn't work anymore. So I try different settings, until I found a good and stable one - thanks God - because I was...