Not sure who this all applies to, but I've noticed if I'm playing in campaign mode offline then Unreal never freezes for me. It would do it randomly during level loading or just sometime during any map really. I could play 1 map or 4; couldn't really figure out what to do (tried the audio fix and numerous .ini fixes plus the final patch). This has seemed to work though. I'm not sure what i lose by not playing the campaign online though.
