Originally Posted by GitDat
It actually turned out to be the memory clock. I dropped it down a tad from 2600 to 2538 and all is well again
I just have the fan on auto but I've never seen the temp go above mid 80's.
Its probably something else that is overheating and not the gpu temp
i got same problem and if i set fan to 100 percent it was without artifacts, so in my situation, temperature was problem.