xfx rx480 8gb grey screen crash

i bought a xfx rx480 gb gs and it hangs with  grey screen forcing me to reboot. Only hangs in overwatch and

vermintide. The card runs great in doom and tw warhammer. I popped a  1070 in the computer and all game run fine.

my specs:


amd ryzen 1700 @ 3.7ghz

asrock x370 killer sli

16 gb corsair ddr4 3000mhz

650w evga gold psu

xfx rx 480 gs 8gb