> The render looks good but in some places you could notice distinct polygons.

Do you mean you notice polygons in the shading, or in the silhouette of the object?

If it is in the silhouette, then yes you can only really solve that by creating more polygons on the export. If it is in the shading then make sure you are getting the good normal information in.


> Out of topic: Which is faster? NURBS rendering or SDS rendering?

Well in most cases both of them are converted into polygons at some point before rendering.

- Michael