So I never personally raised a bug report, but this issue was the one I saw when I first got the gpu: https://gitlab.freedesktop.org/drm/amd/-/issues/2460 Exact same issue I've always had, MCLK gets stuck at 96MHz and refuses to budge, but since it was relatively easily solved with a quick script that just changes one of my monitors between 60hz and 59.97hz I just accepted that 3 second operation as part of what I had to do to play games lol.

There's also a level1techs thread with people with similar issues here: https://forum.level1techs.com/t/linux-really-sucks-right-now/223700 And also this Bazzite issue: https://github.com/ublue-os/bazzite/issues/1070

I can replicate the issue, though right now I've got the opposite issue since getting a 4K144Hz monitor that ends with the MCLK being stuck at maximum at all times, which tbh I'm fine with as I don't care about the efficiency, I need the heating in this -30c weather anyway.