Why bother to turn Vsync off? Whatever reading you get of fps is false if its above your monitor refresh rate anyway. If your monitor is set at 60 hz, your screen will only display 60 fps, regardless of how many fps it says you are getting in the game. Your video card can pump out 200 fps, and it wont do you a bit of good if your monitor cant support a refresh rate that high. Only thing it would tell you is that your video card isnt working very hard to render whatever is on your screen.