Hey there, Im Tim, also a fellow gamer, and have a 970 in my back up gaming rig.
are you overclocking?
Have you tried a bench***** *****ke Heaven or 3dmark to see if it happens there?
try default.....Never try ultra, you will always get poor results.
this is either a driver issue, a hardware problem with the card, or your Power supply is too low.....what is your PSU?
that PSU is not a problem.....
its drivers or a hardware.