FPS limiters are aptly named and do exactly what their name suggests: they limit the output of frames to the monitor. ... The best use for an FPS limiter is to prevent the screen tearing issue we described earlier. If it is set to the monitor's refresh rate, you will ensure that you won't encounter any problems.

Should you use a frame limiter?

It's especially useful on notebooks and gaming laptops since it allows you to conserve battery power by stopping your graphics card from running at full load if it doesn't need to. In some instances, limiting a game's framerate can also lead to reduced latency.

What is frame limiter in GTA VC?

The way GTA III, Vice City and San Andreas handle physics calculations is frame by frame, instead of time based calculations. So if you don't play on 30 FPS (AKA Frame limiter on) you'll experience wonky physics that make the game nigh unplayable.