Seems as if you were correct. New card, and no crashing with artifacts. Though saying that, the drivers are still bad.. black screens here and there. But now at least the card is usable.
Happy to hear that.
You could've send it back and try to get your money back, though. New cards are around the corner and the performance boost is believed to be big.
I'm still getting black screens and crashes as well. Seems like it's caused only by a driver and it still is a good reason to RMA the card.
Take a look at this picture:
Seems to be running fine now, went back to PCIE 3 in Bios instead of auto and maybe that helped. I could return it and wait for the newer cards but then something new will come out too. My new videocard upgrade will be when Unreal 5 engine built games are the new norm.