Mapserving in Bane Spider Ruben's Arc

I'm having trouble with mapserving in the second mission of Bane Spider Ruben's arc in flashback. Sometimes I can make it around the corner into the first objective room, other times I'm already frozen when I first enter the door. I've had this problem on beta and now also on live, defragged my computer, the whole works.

Has anyone else had this problem, either in flashback or not? Any suggestions?

Yes, the mission is on an Arachnos base map. I've tried turning off geometry buffers, reducing to minimum settings, and changing costumes, but nothing's worked. I could understand if I might have had a problem with the Arachnos maps before, but this is a first for me.

I dunno :/ that's usually solved it for me. If you're on Freedom I could try n help out if it's still crashing.

I got past it by teaming with someone enough to clear some of the map first. I had to enter to talk to the final boss, though, so that got me a little nervous.

It's mission map V_ARACHNOS_45_LAYOUT_03_03P, in case anyone's curious.

All of the maps used to crash for me big or small.. But It was the 3 level ones I dreaded the most. I hope they look into it more.