1. Overclock your Pi – You MUST use heatsinks/fan for this
2. I haven’t tried this yet but it is on the wiki for this project: in your retroarch.cfg file, set the audio_driver to sdl (or try alsa, see which is best) and set the audio_out_rate to 44100
3. Try the “experimental” ARMSNES emulator, it has better sound but less compatibility with games…
I tried all of those opt but i am still getting weird sound when playing legend of zelda, the link to the past. The audio during rain scenes is very bad. Not sure what else to try at this moment. any suggest would help.