Yeah that’s not normal, is there anything appearing in dmesg? Probably do dmesg | grep -i amdgpu to filter out the other stuff.
Otherwise maybe try a different desktop environment and create a bug report if it is KDE specific, or create one anyway and someone smarter than me should be able to work it out.
What do these artifacts look like? I’ve got lines appearing on my AMD laptop with fractional scaling enabled. But I’m pretty sure that my issue will be fixed in Plasma 6.
Edit: Actually for my issue I just increased my VRAM allocation to 4GB and it seems fine.
Oh, I got shadow banned from Reddit for helping someone run a large language model on their GPU.
Like I just assumed the user stopped caring until I looked at the post in incognito and my last comment just wasn’t there, yet it appears when I log in
So with the third party apps thing, that was the last straw for me.