Metroid II ‐ Return of Samus - stepsy/Stepsy3DS-Compatibility-Wiki GitHub Wiki

Summary

Graphically it suffers from little issues and performs well, but the sound stutters. The other issue is, that if you load the game through the “Load Restore Point”, then you will no longer hear the sound of the game until you restart Citra and load the game without the “Load Restore Point”

Can also unpack the .app rom (guide from GlazedBelmont) and use a different emulator for it.