Hasta La Motion!

I have a model with an anisotropic material and when rendered I get artifacts. It’s only in one spot is what I don’t understand.

The piece was modeled in subd and converted to polygons. Now, I switched back to subd and it’s not like an artifact but I get a specular streak where the artifacts were.

Converting to nurbs I don’t have the checkered artifacts or streaking but my pieces are split into multiple patches and when rendered with nurbs I can see the seams.

The geometry is clean, good uvs and looks fine with all other materials. Does anyone know what is causing this and how to fix?

I’ve played with tesselation settings on nurbs, subd and polygon and no change occurs. Strange.