I purchased Lenovo Legion Y720 a week ago. For 2-3 days all games worked pretty good i used to get 60 fps in High settings in games like GTA 5,Mafia 3 and warframe. But now i'm getting like 15-20 fps. Things i treid:
Updated my drivers, Reinstalled Geforce experience nothing worked. I found that dxdiag command could not identify my total size of GPU. Check the screenshot maybe you will understand.
Read more: FPS drops in new laptop?