The patch doesn't address the belt speed problem. That didn't show up until processors starting going faster than 600 or 700 MHz, which was after the patch was made. It'd be nice if LEC made a new patch for it.
Well, I guess you could try the "load up a lot of things in the background" approach, but that's a little iffy. As for save games, well, I would gladly donate mine, if I could actually get Grim running in 2000.