Metroid Prime- 100% Speed, but VPS drops?

[zant]

I have a M17xR3 w/ 2630qm and ATI Mobility 6990m. I open metroid prime and play around, but I get laggy in game, A LOT. FPS will drop suddenly to like 30, even though speed still shows 100% and VPS remains 60. How can I fix this?

[DefenderX]

You can try to enable "Accurate VBeam-emulation" but i don't think, this could help a lot.

Metroid Prime is a very demanding game.