I'm not saying it isn't slower, just that the demo version is supposedly not up to par. I can now agree that the demo version is slower as I just got my B5 installed and did some pics. Haven't tried any from B4 yet so I can't say if it's the same speed or not. I like the full version so far even if it is slower. As this is just a hobby for me I don't need super fast renders anyway. Would be nice though! :)