Any improvement regarding this issue? I had the same problem too, using i5, gtx 760 2gb, 8gb RAM, win 10 pro.
I am afraid that win10 was the cause of this, or maybe there is some directx that hasn't been installed, but I'm already try everything, including changing my nvidia control panel settings. Please help. It is annoying to play this game with 30fps, while I could run GTA V on max with 60fps stable.