Vsync option in game use adaptive vsync, and the numbers only refer if you run your monitor at 60hz, 60 will lock fps at your monitors refresh rate, 30 to half your refresh rate and 20 to a third.
Vsync option in game use adaptive vsync, and the numbers only refer if you run your monitor at 60hz, 60 will lock fps at your monitors refresh rate, 30 to half your refresh rate and 20 to a third.