I'm not sure about this but the 24 fps eye limit thing may be misleading. Even being true, it doesn't mean that you won't notice the difference when video goes above 24 fps, due to synchronization issues I suspect. The game's fps may not be synchronized with the brain's image processing.
Note - the above is just a guess, I'm not an expert in such stuff and I'm not in the mood to research it right now :)
My Mario Kart Wii friend code: 2707-1866-0957







