Curious about others framerate in Giants on slower processors

[Astroguy]

I was wondering if some of you with lower end systems could post your average framerates in Giants. I currently have a p2 450 with a gforce 2 gts and 256 megs and it plays very slow for me. It usually runs at around 10-15 fps constant with an occasional jump to maybe 25 when I'm staring at the ground. When lots of enemies get on the screen it goes down to 7 or 8. It scares me to think how it will be when I get to Kabuto. My settings are 800x600x32 (no fsaa) with all settings maxed running the 6.49 drivers with win2k. The reason I'm asking this is some people say that with a system similar to mine (around 450-500 mhz processor) Giants runs smoothy while others say it runs poorly. Thanks.