A SM64 level test would be great - but there could be an issue with N64 levels/models due to the size of polygon size and the lack of perspective correct texture mapping is all. You can see how affine texture mapping causes distortion when close to the camera and at angles and such. The PS1 got around this by not using large textured polygons - instead breaking them up into smaller ones to combat this. That being said, a game of that level of visual complexity is not really a realistic target if you want a playable framerate. BUT through some clever level optimization and thinking ... maybe it could be possible to an extent?!!!