Yes, a power supply unit can lead to GPU artifacts if it fails or is unstable.
Yes, a power supply unit can lead to GPU artifacts if it fails or is unstable.
I went shopping for a new PSU (they were discounted) and put it in today. After testing, it fixed the problem. Thought it was the cause even though others said otherwise, but it worked after all.
The only thing that made me think it might be PSU was what you mentioned... you seem to be there, something felt wrong about it... but it still doesn’t make sense to me, lol. Good to hear it’s fixed!
It's strange, isn't it? My main thought was that a worn-out part of the PSU wasn't supplying clean power to the GPU, which made it behave oddly. I've heard about this before, but it's uncommon. I'm relieved it got fixed, even though it cost a lot. Thanks for your help!