Mafia 3 has been patched on PC, so restart your game or PC in order to get this patch.
This patch is ready to unlock your 30 fps lock and gives you the ultimate 60 FPS gameplay, go ahead and unlock the full Mafia 3 potential
You can adjust the fps setting from the display menu, it will give you the choice to play the game on 30, 60 or unlimited fps.
The update also makes improvements to Mafia 3’s key mappings, which unfortunately will reset any custom bindings you’ve put in place. Be sure to reassign them after installing the patch.