Timing is off from a real SNES by up to 3%

[Nebuleon]

As of CATSFC 1.31, the emulation timing is off from a real SNES by up to 3%.

On the map screen for World 1 in Super Mario All-Stars's Super Mario Bros. 3, the emulation is too slow by 2%.

Rydian on GBAtemp remarked, with wave files, that the introduction screen for Legend of Zelda: A Link to the Past ran successively too fast, then too slow, by around 3%.

Some other wave files proved that Final Fantasy 6 also ran too slow by around 1%.

I need to investigate the timing catch-up code in automatic frameskipping and in audio rendering. Seeing as the audio rendering times itself on the frame rendering, it's probably more about the frame timing.