p.s. I tried the new mupen64 core and the snowboard didn’t have textures on that one.
Am using the mupen64plus core and get these strange squares around snow when it’s near the camera. Is there a core option that fixes this?
Did you try mupen64plus_next?
Yes it’s fixed, though rewind seems to cause a black screen on that core.
EDIT: or even outright crashes Retroarch.
I wouldn’t use rewind with N64 emulators.