I'm one of those guys who doesn't mind if the frame rate is a little under 60, but it's become an annoyance of mine that many PC games will limit you to either 60 frames or 30 & below. When my 680 isn't able to fully give me 60 frames in any given moment it doesn't dip slightly, but rather immediately switches from 60 to 30. It looks really choppy and jarring, and it sometimes makes the game unplayable for a second. If my card can do 55 frames, why does it have to go all the way down to 30 and look really gross in the process? I don't want to turn down the settings if it's 60 frames 99% of the time, but then for those few certain moments it hitches from 60 to 30 and then back to 60.
I'm getting a little repetitive here, but I just want to ask why PC games do this. Is it something to do with how VSync works? There are some games I've played where VSync was enabled but it allowed me to have frame rates in between.