Slowdown problems and keep Lando alive

[RedXian]

I'm playing through the game a second time (this time going for the darkside). But this time i'm playing the game with the 1.03 patch. Everything has been running fine until I get to the "Keeping Lando alive part". I've been through this before so I know what needs to be done. It's just when I start this fight I can take out the guys that come through the door at the end of the bay but when i turn around and came back to face the other guys I get massive slowdowns. To the point where either Lando or I die. It's almost as if there is not enough memory left to support the characters. But I have had no problems like this when I played it the first time. And I haven't had any slowdowns since I started this game. At first I thought it was a result of turning on force speed, but I tried it without and still had no luck. So now I'm wondering if this might have something to do with the 1.03 patch?