[Aeolos]

> Starfox for example used to run something like 20% faster than on hardware/

Make that 200%. I own the original and it's indeed unplayable on zsnes.

Zsnes is a horrible SNES emulator all around. It was decent when it came out 15 years ago, but it mis-emulates so many things it's just not worth bothering with it anymore. Square games (Final Fantasy, Chrono Trigger, Rudra no Hihou) all have wrong sound effects; anything with SuperFX is totally broken; Tri-Star games crash and lock-up randomly (Tales of Phantasia, Star Ocean). And the list goes on and on.

It's sad, because zsnes really has the best UI of the lot, but in 2016 there is simply no reason to use it. Use either bsnes/higan (for 100% accurate emulation) or snes9x (if you want to run it on an underpowered tablet.)