Combat mission extreme lag/choppiness

[Dlw4456]

Hey guys i've looked around everywhere for a solution to this issue but I just can't seem to find anything that works.

I recently upgraded to a GTX1080 and previously CM:FB and CM:FI worked great no issues, but the lag now is so bad even on lowest settings it lags terribly. I've tried using my video card, optimizing via nvidia settings, and shit ton more but cannot figure this out and its driving me nuts. any recommendations or help would be appreciated, thanks.