Demon's Souls BLUS30443 Freeze at Flamelurker

I decided to try out Demon's Souls after looking up some videos on how to set up the emulator. Everything was working ok, but I did sometimes get freezes at loading screens after boss fights. Now I can't progress at all. Every time I get to the Flamelurker fight the game freezes as I'm walking through the fog wall. I also get a fatal error when closing the emulator afterwards that says "Stopping emulator took too long. Some thread has probably deadlocked. Aborting". I've tried things like changing the renderer and reinstalling but nothing has worked. 

Log Files: https://mega.nz/file/0E1XWahB#FA8s8eYFdE...pZpluQuRn4