You have to also consider V-Sync. If the frames don't divide nicely into the refresh rate (ex. 30fps→60 or 120Hz), visual problems occur (like screen tearing). So, locking it at those frame rates wouldn't really benefit the game.
That's also another reason some in the PC community (which a few like to call 'elitists') brag about their monitors/refresh rates (especially if they have beefy rigs). It isn't necessarily elitism (at least, not always), but a good feeling about a scientific superiority.Last edited by CGI-Quality - on 27 May 2019