The saturn version run at 7fps or something. The 3DO version runs at pretty much the same speed as the Saturn version.
And the movement is jerky as hell. The PSX version was the only that got it's ass saved from the massive slowdown
It seems the raycasting graphic engine, from the PC version, was replaced by a polygon based engine on the Jaguar, 3DO, Saturn and PSX versions with little to no optimization. So the polygon count hogs the consoles, being the PSX the one that could handle it faster.
The 32X version and the Snes version still uses the raycasting engine. That's why even the Snes version has better framerate than the Saturn version.