I had this very frustrating problem throughout the entire game. I thought it might be because of how fragmented my hard drive is, but after reading that page, I'm not so sure.
edit: Yeah, defragmenting(and I'm talking manually) and reinstalling/downloading didn't help.
I'm wondering how a seeminhly ubiquitous problem like this could have slipped past QA, but I'll refrain from jumping to conclusions. Now its just time to try some of those tweaks.
This comment was edited on Nov 20, 03:01.