Problem with HD 7870 2GB,

bought middle earth shadow of mordor to play until divinity 2, and get this "display has stopped working and has recovered" mini crash that closes the game, i just ignored it, but now im getting it with divinity 2, i have heaps of oter games, i play total war warhammer and starcraft 2 on max without issue for hours and hours, i dont think its an overheating issue, divinity 2 and middle earth arent "demanding" games, hell i played advanced warfare and black ops 3 on this rig without issue.