Random Overture Slowdowns?

[alucardwcd]

The save is too large to attach, heres a link to it http://people.rit.edu/jcs3370/Iron%20Sha....48_62.sav

Just turn around and the door to shaft 12 should be right there. For me, the game is fine until I enter the door, at which point the slow down occurs. Within chapter 3 the slowdown also occurred in one other place, the refinery, but I was able to fix that one by dropping the resolution down to 1024x768. I don't think it was the resolution that fixed it so much as it was the changing of the resolution forced it to reload something