Nah....I'm not wanting perfect quads.....Chose Moi for it's hard surface and boolean ability.
I wanted to point out that sometimes poly artifacts can show up even when C4D is used to render a moi model imported with normals.
Many points have to be manually welded/cleaned up.

Look at the polys to the left of the words output: and display:
If the exporter could weld points which are as close as these show, it would be even nicer.
Or some how handle these close points or sliver polys better.
This model is using CentroidTriangulation=n as y is so much worse. With Y you then have many points in the center of polys to weld or remove in a polygonal modeler.




In example 2 these points are so close they would no doubt create a smoothing problem in a polygonal modeler. So they would be welded by hand.




I should mention I have adjusted both divide larger than and avoid smaller than with many settings tests and still get slivers or
points that should have easily been welded to a neighboring point.

3D modelers I've used such as C4D still produces strange results at times using N-gon output, so I'll steer clear of it and settle
for Quads and tris. I hope this maybe helps.