(PC) Every time I reach the Galactic Emperor I crash. (Algorithm Story Mission)

The first time i had installed the beta, I attempted to do the Algorithm Mission. The game runs perfectly smooth up until I reach The " Galactic Emperor" Boss. The second the Galactic Emperor spawns in my game slows to a crippling 3 frames a second and the game closes shortly after. The second Mission runs fine, and so does Versus maps. I have tried reinstalling the game several times, and even tried turning off Windows DEP and have had no luck. My guess is that it is a Fatal Error, but who knows. I’m running on a Windows 7 operating system. Any help or tips would be most appreciated! Thank you!