DEATHATTHEDOOR;
I wasn't sure if the effective frame rate that looks continuous was 30 or 60fps, but it would depend on the medium as well as the individual. This isn't quite the same thing, but I can see monitor refresh rates below about 78Hz. A long time ago I used my brother's computer set at 60Hz for a couple minutes (which started giving me a headache), and asked him if he wanted me to fix the flicker. He had it set like that because that was the default, and didn't notice any flicker.
Mirach;
In general, a higher fps is better, but once you get to a point where the game is running smoothly even with a lot of things on screen, additional fps are not going to visibly help much.
As long as the game isn't slowing down too much or too frequently, I would base my resolution choice on the map/interface size rather than the fps. At higher resolutions you can see more of the map around you, but the interface and writing in books, etc become smaller.
