I'd suggest Snes Yoshi's Island. I've tried it with both snes9xcurrent and snes9x2010 cores and it runs slow. You can see it from the menu screen and the opening animation. On my older sd card it runs perfect.
Btw, do you know if it's possible to remove the eversd loading screen? I don't mind...
I find it odd that games seem to perform better with the older method than on full retroarch. Specifically, Snes games with FX chip like Yoshi's Island struggle on retroarch -no matter the core- whereas on the previous method they run smooth. Same goes for a bunch of GBA games I've tried. So...
The best thing about the retroarch option is not having the bilinear filtering that made all the games look blurry. But I miss the UI from the older method. It made it look like an official cartridge (if you put the wok).
One thing I don't like at all is having the eversd loading screen even...
Ah, yes, portrait mode, surely the best way to film a row of people. If only there were some way to fit a wider shot, at the expense of height... if only...