I believe there's a difference between the monitor/tv rendering FPS and the computer update/render FPS.
On a normal tv, you won't notice any lagging or choppiness, and that's a show running at 24fps on a 50 Hz/"fps" screen.
Now if a game runs at 30-50 FPS (or rather, closer to 30 than 50), you will infact see lagging and/or choppiness.
I don't know exactly why, but I think it has to do with the game FPS isn't 100% smooth at that current framerate, all the time.. At 60 FPS, the game is smooth as silk..
this is just my personal experience anyway.. :p
On a normal tv, you won't notice any lagging or choppiness, and that's a show running at 24fps on a 50 Hz/"fps" screen.
Now if a game runs at 30-50 FPS (or rather, closer to 30 than 50), you will infact see lagging and/or choppiness.
I don't know exactly why, but I think it has to do with the game FPS isn't 100% smooth at that current framerate, all the time.. At 60 FPS, the game is smooth as silk..
this is just my personal experience anyway.. :p