Heh, this is a bug in the game that was never patched. Your processor is too fast and you should be ashamed.
Your best bet is to download the trial of CPU Killer (
http://www.cpukiller.com/products/cpukiller/), and slow down your processor to about 400mhz or so before you load Grim, and then you should be able to hop off the conveyor belt.
As soon as you've finished year3, you can uninstall it. CPU Killer, that is.