If you look at the link i gave you (i'll just do it again), you see a woman finishing the game in 8:32, just as you said. Speed Demos Archive - Final Fantasy IX
But she's not doing a perfect game, only running through.

A perfect game involves getting the EXII as well as EVERYTHING ELSE, just getting the EXII doesn't involve getting everything in the game.
Did i not make that clear?
I recommend actually reading my comments instead of just blurting something that doesn't make sense to what im saying (no offense).