After running p95 blend and furmark simultaneously overnight no issues arose (obviously I was asleep and couldn't look at any artifacting, but when I woke up there wasn't any in sight and temps were...

Just ran p95 small fft and furmark 1080 fullscreen with zero issues. No artifacting, nothing.
CPU temps:
pkg - stable at 80c
highest core - 82c (usually floated under 80 ish with the remaining 3...

I've rma'd my gpu twice (currently on my third). I've also replaced my PSU. Not sure how exactly to pinpoint what's been causing this shit. But basically over time (varying amounts of time per rma'd...