iv been having this issue where my gpu underclocks it self when i'm in fullscreen and tab out i'm not really sure how it happens i don't really pay attention to the things i do

the only way i'm able to fix it is by disabling gpu and turning it back on or a simple restart

and no i know its not my pc because it also does it on my g75vx and only with this game i'm able to tell it underclocks because i use the on screen display that and i also start lag because of low fps

maybe some of you might be having this same issue and don't know about it? maybe some one knows a better fix?