I beg to differ. I have before tested my dad. He just cannot see above 25-30 fps. His eyes just arent the best bu a lot of people just would not notice the 30 - 60 fps jump. I mean you dont get people complaining about Pal 25 FPS television. I can tell the difference and hence my GP2x movies are sourced from 30FPS files instead.
I am assuming you meant 29.97 fps
I don't know what the refresh rate is on this LCD, but I don't think you can notice standard LCD refresh anyway, CRT redraws, therefore the technology is designed for quick fall off of the phosphorescence so that the picture will remain sharp.
LCD on the other hand have slower fall-off of the phosphors, thus why 60hz refresh bothers no-one on a standard LCD, but you may notice ghosting.
If indeed the LCD screen we have in the GP2X can go to say 75hz or 100hz I am very happy, it means that we don't need to worry about ghosting. I don't know if those LED's are flickering though, I get a powerful headache from those "energy saving" LED flashlights, the flickering kills me, If they regulate the voltage at something like 10mhz and filter it with a proper sized Capacitor (what the power supply chip in the GP2X does for the MMSP2) then it shouldn't bother anyone.
On the subject of 60fps vs 30fps, I am sure that we have at minimum 60fps, it is a "standard" for PC computers. I noticed the refresh of the LCD in my two GP2X's, that means we have a high-refresh/quick fall-off of phosphorescence. I never got to try the LCD tweaker when I had my GP2X's, I guess it raised the refresh rate on the screen, sounds perfect.
On the subject of FrameRate, I don't think the difference between 30fps and 60fps is enough to get excited about in a video, as long as the refresh stays at 60hz or above the eye cannot detect the difference, or at least isn't bothered by it.
At 25 to 30 FPS I am sure you can see the difference.
On Topic:I don't know what any of this has to do with playing emulated games. As for the games it is the timing you notice because you are interacting physically with the game, thus you need to time yourself against the game.
If the games timing is off and it is a game you played a lot on the real console then it is entirely possible to notice very very slight nuances in timing, because of "timing related tasks", such as jumping with Sonic and controlling his actions with precision to reach difficult moving platforms.
