What exactly is vsync? My mental concept of it is "only draw as often as your monitor's refresh rate, because you won't see the other frames anyway", but I might be wrong
@vaporeon_ monitors will draw a frame row by row, and if it starts drawing a frame before the previous frame finished you get a screen tearing effect. vsync forces the monitor not to draw a frame until the previous frame is completed
@vaporeon_ I didn't actually know this until I googled it 2 minutes ago