V sync not working

I have v sync enabled in game with 160fps lock for my 160hz monitor and vsync is not working for some reason, i set my game on ultra settings and im pretty stable on 100fps, but game is not butter smooth like fh4 is with 100fps and vsync. Is anybody else having this problem?

If you are using an NVIDIA graphics card, check if V-Sync is enabled in the 3d settings on the NVIDIA control panel