Using amd GX 6600... Mostly going fine, tho I haven't tried any big heavy games. One thing tho... Everytime I turn on my computer, no display. I reboot it and then ot works fine, but ot never does the first time. One path I'll investigate is the monitor: my monitors are both older and use DVI or VGA ports, so I have to use converters. I might try and get my hand on a more recent monitor to see if I still get the same problem. But if I do, I'm not even sure where to ask. I don't even think it's a linux problem, because I tried removing my drive with linux living one with windows and the problem remains. I also was using mint when the problem started and switched to Arch (btw) since and it doesn't change a thing.

the most bug-free gpu experience I have with Linux is Nvidia GPU + KDE X11 with compositor disabled. Pure bliss. I've had a 6700XT and it was terrible too, now I have a 4070. For my laptops, intel igpu works decently well with wayland KDE, but there are few bugs, like having to clear some apps gpucache (vscode) quite often

Update: today I was able to update to kernel 6.7.5 and the issue disappeared for me.

If it makes you feel any better you're not the only one. I also have this problem. Whenever it was time to upgrade my video card I'd try Ati and later AMD and it would always have some annoying issues. Meanwhile I'm on my 7th or 8th Nvidia card over the years and they're always great.