Unfortunately I have a micron memory chip and I cannot get past +400MHz on memory overclock, I get the checkerboard artifact if I do. But right now my card isn't overclocked and I'm not facing any problems.
These problems are expected from Nvidia, specially on the GTX xx70, no one forgot the 3.5GB Vram of the GTX970, gladly this one is not that dangerous because the minority only extremely overclock their cards, myself I'm about to downclock my card to enhance its lifetime, I dont need it to draw 150fps, I'm fine with 100fps :) (GTX1060 6GB)

I wish Nvidia has an overclock profile per game just like AMD, maybe they do! Will check.