Game Won't Stop Crashing at Point on Map?

I recently bought DA:O through Origin, and I completed the prologue with no problem twice - my game never crashed, froze, lagged, or anything. Then I started a third playthrough. I finished my background story, traveled to Ostagar, and had nearly reached the meeting place with Alistair when my game crashed. I relaunched the game, and as soon as I hit resume and my game loaded, it crashed again. I restarted my computer, relaunched the game... same thing. Then I decided to load an earlier auto-save from as soon as I reached Ostagar. Now when I hit resume, the game doesn't instantly crash. I spawn at the bridge with Duncan, and begin to walk across. However, once I reach the same point on the bridge every time (just before the incline leading off the bridge), the game crashes. I've tried a few possible fixes I found in other topics about game crashes - running as admin, changing affinity, etc. - but none of them work. My computer is far above the requirements for DA:O and, like I said, I made it past this point twice before with no sign of any issues. I could restart my game and it wouldn't take that long to catch back up, but... I don't want to. Anyone got any ideas how I can solve this?

Edit: I don't have any mods installed.