Another thing you can try is to deal with Michael and Victoria. With all of those morphs, they're real resource hogs. If you're rendering a still-frame image, you can export Mike and Vicky, fully-clothed and posed, as .obj files, and then load those into the scene instead of the CR2's. You'll have to reapply the bump maps and transparencies, but the meshes alone will only consume a few megabytes each, and you won't have the overhead of all those morphs clogging up memory. If it's an animation, you can still do some trimming on both characters with Morph Manager, removing unused morphs.