Thank you for your answers, I tried a little bit everything but it is not conclusive. It's not the rendering that's slow, it's the manipulation in the scene (simple scene with only one character without scenery) and the simulation in the cloth room. Did I miss an update to poser 12 ? Otherwise I no longer have La Femme base in the interface when poser opens, do you know how to put it back? I wonder if not if I will not uninstall and reinstall poser 12.