Don't like the aspect ratio? Or the flicker? Or is the the music timing?
There's a significant number of games that play with less slowdown in 50 Hz due to the greater amount of DMA time (along with some other factors). Granted there's the issues with games that used the vblank timer for tempo and others (far less often) with actual gameplay speed problems due to such timing, but less so in later games. (it really depends on how the music is timed and whether it's been corrected if vblank was used for timing)

