After watching that flash derula posted, I wonder... where the hell did those 3D renders go? Why aren't they in game? I mean... aren't they awesome?
They're renders. Time is no concern with rendered images. The art was probably created back than specifically to be used in the rendering, ignoring any polygon count limits. In those days, they likely took a very long time to render, and even if the art was still there, PS probably still wouldn't run at a sane framerate if they were in the game.