How to fix Dishonored 2 FPS drops (Nvidia)

1st of all you need go in your gpu panel (Nvidia control panel) than go Manage 3D settings----> than go program Settings and choose Dishonored 2 exe if you cant find it use add and sort by choose Recently used so you can find it easily and if you are done with that than find Maximum Pre-rendered frames and choose number--->1<---- just make sure that you have press apply and you are done :D