BSOD/Black Screen While Gaming. Video_TDR_Failure atikmpag.sys

The TDR issues are due to your GPU timing out and then failing to reset itself. It's generally going to be related to your display driver, or your GPU's hardware (potentially overheating etc.)

Have you confirmed that your GPU temperatures are not going into the 90C+ range while you are gaming?

When gaming my max temps are always low 70's at most, according to GPUZ and Asus GPU Tweak II.