wipeoutXL (wipeout 2?) is very slow compared to wipeout 3 any ideas why that should be?

GTA 2 runs amazingly fast, but cars and characters are not drawn

MDK runs but is glitchy. First part is slow but then okay once you start on the ground. Not tested different multipliers

Ridge racer works but at 60% speed

Tony Hawk 2 works but is slow 60% or so...

Tiger woods 50% speed

Metal Gear solid runs fine, 70% speed.

All at 1.15ghz