Yes Bryce 5 is slower on my AMD 600 MHZ/448MB of Ram. But that an inherent trait with Bryce, yes I wish Corel had done something to speed it up. But the render quality is oustanding, luckily I don't use it for animating too much. I can render a 4200x3200 pixel detailed image in Carrara in about 30-40 minutes, and it looks incredible, but when I want landscape scenes(which is what I use Bryce for) I have no other choice but Bryce. At first I was not very happy with the upgrade, but the new features(despite the render speeds) make it worth my $99 bucks. kaom