CRASHING.

Someone Help My game keeps Crashing... I usually have to logout and relog (while in game) . and this cycle with continue for at least 3 or two times everyday. then it wont happen again. till the next day or something. But these crashes makes it where I cant play ranked cuz I will get reported. been dealing with this for MONTHS. I play on Alianware with i7. so I have decent specs. idk whats going wrong tho.