I have the full NTSC DVD9 image of God of War (got off of usenet) on my HD.
I'm at the point right after you get Pandora's Box. The game freezes during the cinematic directly following you pushing it out of the temple. I don't think this is a layer change point, plus it sometimes freezes in different places. It also occasionally freezes at the short cinematic right after you open the globe with the box inside, but not usually.