Hi Berube, well typically CAD models don't need further subdivision smoothing on them, so your all quads and connected edge flow constraints are kind of unusual. Normally a CAD model is smoothed in a different way from that, it's got filleted surfaces where things are supposed to be round and as long as you get vertex normals coming through those areas will render smoothly without needing to be all quads.

Are you doing something unusual to the CAD models that you need to have those specific constraints?

- Michael