Just got my H2215 Today Woot...
I tried PocketSNES with CronoTrigger and hit around 20-30fps with sound on, sound would slow down sometimes but it was ok i spose.
Then I tried CronoTrigger with Latest version of MorphGear, it ran at 60 fps CONSTANTLY, with stereo/echo/16bit!
Mind u im running all this with other games right off the rom, i dont have any sd or cf cards yet. (still otw with fedex) lol. so with only about 20megs free memory i can run it that fast with Morphgear...
The latest morphgear was designed for XScale cpu. it's very nice. Some should try it.
u can download at
http://www.morphgear.com
Even tho i still like the PocketSNES layout better and the pad. as soon as pocket SNES is updated for xscale i'd switch but until then morphgear owns.