Many of the tracks have weird lighting to them and it makes the character models glow in a weird way. I have no idea why they decided to go with this "Sumo" graphics engine when they could have just stick with the far superiour engine used in the previous game.
Driving a PC racer with the keyboard is about as effective as typing an e-mail with your car's steering wheel. ~ Brian Ekberg
Its really bad with humans like Gum. Their artwork, and character portraits look like AMAZING 3d Renders, but then seeing her smile when winning a race makes her look like something out of Silent Hill.
I still don't see what's so bad about the character models outside of Gum's face. The models in the first game looked.....odd to me somehow, especially the mouths on Sonic and co. In this game, their expressions and models look far superior.