Quote Originally Posted by ProblemSolver View Post
@DL: It has to render twice the amount of polygons, but this doesn't seem to be the problem. Rendering a polygon (applying shaders and stuff) is different from processing geometry as such.
Ah. I had assumed that processing the geometry and then displaying the image (along with any shader effects) fell under the umbrella of "rendering". Thanks for clearing that up.

Quote Originally Posted by ProblemSolver View Post
Not every game needs 60fps in 3-D. But it's pretty ridiculous to play WipEout
in 30fps in anyD.
As someone who has played the splitscreen mode numerous times with friends, I wholeheartedly agree with you. If they had just simplified the graphics (like in EVERY OTHER SPLIT-SCREEN GAME EVER, including Wipeout 64 and Wipeout 3), that wouldn't have been a problem.