Leftie

I have been having the same problem for the last 2 weeks, my setup is :- i74770k, z87m+ mb, xfx R9 380 graphics running win10 x64. I lowered fps to 30 then 15 but still had the same problem, i went into bios to dissable hyperthreading but noticed that the mobo was in powersave mode instead of normal mode where it was previously set, i reset to normal and have been free of crashes for 2 days. fingers crossed thet was the prblem on my nachine, hope this helps others.