Freid, have you used a lot of soft shadows ? With high resolutions ? They eat a lot of ressources, especially when coupled with GI . Nope just a skylight and 2 small light whithout shadow to tweak with the gi-transparency-mode-bug. You, know, the one that you told me a bit about ;o) I think the 'dodoche' file is slow to render, because it has a LOT of polygones that's it ! (i dont have the file here at work, so i cant tell you more about it. i'll look if you want) Freid