I recently upgraded my GPU to a Gigabyte xtreme 970. I did the DDU clean uninstall thing too and it still keeps failing and recovering. I don't get any screen flickers or blinking. A message just pops up saying the display driver failed and has successfully recovered.
http://pcpartpicker.com/p/zPVk4D this is my current rig
http://pcpartpicker.com/p/zPVk4D this is my current rig