Lol, if you have seen a single CMT tag, you wouldn't be saying the things are quality.
But anyway, 90-120 FPS is actually about what my real Headlong on H2 runs on.
I know you probably don't want to do this, but you could make the crates a scenery item, meaning the game has to do less calculations for the physics and whatnot, but I'm not sure if you want to sacrifice the H2 feel for better FPS.
Try making LODs, and if that doesn't help, it looks like you'll have to take it from there.

On that FPS rate, you could make it feel like H2V...