up untill recently i have had this crash issue, what i did was cap my frame rate to 60fps and i also used MSI afterburner to slowly underclock my rig (alot of computers start out overclocked) , i wound up with it around -100 on the core clock and left the memory clock a zero. also i have also tried with motion blur off and the wind setting off as well. i hope i was able to help in any way :P