Smoothing? Wasn't that Bryce? C2.1 does not have a smoothing function if I remember correctly (maybe you meant 'subdivide'?) But in my case it was specific texture room freezing. Rendering and previewing were not a problem at all, and those processes use the videocard as well. I thought, last night, that it just happened when I wanted to work on a texture that contained bitmap information, does that ring a bell with anyone?