Bitcoin Mining and Gaming

I use to be able to bitcoin mine and game on low intensity np now days it works fine for like max 10mins and my video card drivers crash if I am gaming and mining is there any way I can game and mine on the same card at the same time

setup is 2x7970s not in crossfire

atm i just tern one off and game on that one but when you game for 12hrs+ perday it will be cutting in to my profits  any ideas?