Simpler, follows cleanly, no more trickery. I think this works much better. It's got separate control for vertical and horizontal lag. I've saved a few presets, and named them from Very Soft to Very Sharp.
It's also very useful to use VSync or Nvidia GSync to sync the frame rate to your monitor. I'm recording video at 60 FPS, but my monitor is set to 75Hz. A bit of a mismatch there, but in game things flow smoothly when VSynced at 75. I've allowed not only VSync, but also frame limits to 60 72 120 144 240 [360 480.. dunno why, but if tech advances I will edit these numbers to anything that makes sense] and 1 friggin thousand... meaning unlimited, by today's standards.