Today, I have some great news :) The emulator is now fully functional. The only thing you need to do is to update git repository line in RetroPie-Setup/scriptmodules/emulators/pcsx-rearmed.sh from gitPullOrClone "$md_build" https://github.com/notaz/pcsx_rearmed.git to gitPullOrClone "$md_build" https://github.com/timemaster5/pcsx_rearmed.git saio and then run update pcsx-rearmed from source in retropie-setup script Then you will be able to run this emulator without performance issues but only with USB keyboard. I am now struggling with key bindings, I am not able to bind UP/DOWN/LEFT/RIGHT buttons of GBZ SAIO.. probably because they are not buttons but hat... I don't know now. Another issue is with the mouse cursor being visible in some games, but this could be hopefully easily fixable. And for the record, the main problem has been caused by one commit to libpicofe adds SDL_DOUBLEBUF flag.