ghostship2 posted at 4:21 PM Tue, 11 April 2023 - #4461804

the lines get harder to see when you subdivide the mesh. I have seen these lines before with the shader in mu store. The lines go away or get harder to see when you subdivide.

Would that not indicate something to do with the smoothing Poser uses?  The lines are, in fact, actual hard edges which would show up as a sharp transition from one plane to another without smoothing.  Subd actually smooths the mesh before rendering, no?  Smoothing might have a practical threshold limit which a subd'd surface gets you below.