Tryed 3 games and all have crapy sound (laggy). Blackthorne(Snes and Sega 32x), Shining soul(GBA) they’re unplayable with sound. If i change any options in retroarch, it doesnt save, so i tryed to create new cfg and it not saving, but loading configs simillar to previus cfg.
I think your phone is simply too slow for those cores.
Try using less accurate emulators like Snes9x 2002 instead, and/or gpSP for GBA.