What I have tried so far:
1- The N64 emulation has improved a lot thanks to the update of the gliden64 plugin, the compatibility with the roms to grown (ex: games like jet for jemini, donkey kong 64, and some others work without apparent problems, some to 1325+ turbo speed, but playable, other playable but with small graphic problems, like mario tennis, mario golf).
2- the emulation of psp is very slow (the games are seen in widescreen and with a very poor resolution, including entering the ppsspp emulator configuration menu, even uploading the frameskip, disconnecting the video buffer), now my humble question: I think that something is wrong here, games that previously worked in this system without much processing effort now become unplayable, and it is very rare because this version (1.6.3) running on android with modest resources has improved a lot because this happens?
3- The Dreamcast emulation has improved a bit in terms of speed (I'm still testing)
P.D: I am using Raspberry pi 3B
P.D2: the work you are doing is excellent, the emulation of N64 has advanced a lot, the compatibility with the roms has improved a lot, I am happy thank you!