Sorry if this has been answered before but i'm struggling to get this to work and not sure if I am doing this right. This is what I am doing:
Note: Running SX OS
- Download the latest nightly build of RetroArch for the switch.
- Extract and place the retroarch and switch folders on the root of the microSD card.
- Download mupen64plus_dynarec_beta.
- Extract and place the retroarch folder on the root of the microSD card overwriting new files.
- Download retroarch_mupen_cfg.
- Extract and place retroarch.cfg and retroarch-core-options.cfg in the root of the retroarch folder.
- Boot up CFW and navigate to homebrew/retroarch.
- Launch Retroarch.
- Load mupen64plus core.
- Load n64 game.
- Play.
First time I tried this and loaded Mario64 the game ran really slow. Second time I tried, after loading the core, it just stayed on a black screen till my switch gave me an error causing me to reboot.