Hi, You might be using some of the unsupported features. Check this for: Supported Features in Interactive Rendering (RT)

Did some test with another model, removed de default material from all the faces and it worked. I found that if the back face is also a default material (the blue face) with will also mess the proxy. I used the UV Toolkit from thomthom to aply de front material to the back face and got a much better result on this other model, only the rims changed material. Result http://imgur.com/a/peTIQ Plugin https://sketchucation.com/forums/viewtopic.php?t=18992#p155759 For the BMW model I used the Global Material Change from TIG to replace the Default material with something else, and worked fine. Result http://imgur.com/a/9CdJ1 Plugin https://sketchucation.com/forums/viewtopic.php?f=180%26amp;t=13192