Also, Diaspora has a lot more minimalistic design. It doesn't use a lot of capships, and the projectile visuals are rather subdued. BP, on the other hand, is bristling with particles, fire, big ships and flashy hi-res bitmaps. If you open up Diaspora effect VP, you'll see that there's very little in there, same goes for textures. BP, on the other hand, uses the entire Mediavps package, then adds about as much new content on top of that. There's no reason for BP to run faster than Diaspora unless you're using a cutting edge engine build for the former, and what came with it for the latter.