It is true that is all we probably can only process of 35 different images. i.e. 35 different distinct pictures a second.
Tv's are differnet too as they are interlaced.
But for animation and the like you can see more. Although as you brain works a lot quicker that any fps and the smoothness and the flow is there.
I would never use the fps limiter I would alwas limit it by the MOnitor refresh rate as a) it is easier but b) the computer will do less work and you will have in thoery a smoother image. (if you limit the fps then you have to do the other enforced limit of the refresh Hz of the it will not be as smooth...i hope I explained that enough. Probably not.
)
ANyway running at like 75 or 85Mhz is good. Me and Gordon run at these speeds. 60fps is too clunky.#
Are you worried about system resource? have you forgot you are running a vis. ;)