So near Christmas, i got myself a ibuypower pc with a gtx 1060 and i7 7700. (bestbuy) Now i heard things about ibuypower psu being very poor. I didn't think much of it as my pc was running great without any problems until a few days ago. Now when i play fortnite or GTA V its barely playable. I will go from 250 fps down to 10 and the game will start to lag. Then my whole computer will be delayed and it takes forever to close the game. However, if im playing another game like Civilization V or CSGO it runs fine. I know fortnite runs gpu very highly. Do you think the problem is my gpu, psu or both?