ultra HLE is an interesting one as it leveraged the similar technology in 3dfx chipsets to effectively natively render n64 graphics. No missing graphics for me on mupen64plus-gliden64. Nope!, compared to my N64-Everdrive-Setup it was horrible! Stuttering, sound cut-offs, unstable framerate, missing gfx.no, not a good emulation. I thought that at least Mario64 and MarioKart64 on Pi-Mupen should run perfect, as these two games run well since N64-Emulation started on PCs over 20 years ago with UltraHLE, Daedalus and other forgotten projects. i implore you to follow gliden64 (the only HLE plugin in development) where you can observe the massive challenges involved in accurately rendering n64 graphics. it's hacky, featureless emulation that barely worked for a handful of games. I remember back in 1999.'Nemu 0.7' running Mario64 on a PentiumII this much better than Mupen on a Pi. Said in RE2 n64 problem on said in RE2 n64 problem on I will say the n64 emulators on retro pie are not the best supported or optimized.

Resident evil 2 n64 rom fix