Hi, I imported a mesh from a 3DS file. This mesh represents a landscape and has 21,000 facets. I apply a flat mapping shader with a colour texture. It is shown properly in prewiev window. When I switch back to Assemble window the CPU use goes up to 100%. From now on I have a total slow down in Carrara. Every action, no matter what function or menu option I chose, takes 2 - 3 seconds until I get a reaction. Even when I close the scene and choose 'Open' or 'New' this slow down goes on. I tried texture maps in different sizes, different shader setups, no change. I could reproduce this effect with different objects. When the facet count is more than around 10,000 I have this slowdown. When I use these objects in other 3D software, there are no problems. On the other hand I worked with textured objects from poser, where the counter showed over 40,000 facets for the object and over 120,000 for the whole scene without problems. I am using Carrara 1.01 on a P III 500, 256 MB RAM with Windows 2000. Is this a known bug in Carrara? Any help is appreciated. wolfdd