Hi! The mesh smooths out relatively fine in our own OpenGL engine, but the Cinerender Engine can't smooth out user defined edges (the contour lines), and that's why it looks hard.
With Morphs though, there are no different types of edges, they are all the same in the eye of the software, so if you convert this to morph, and set the edges to smooth, it will look smooth in the Rendered image as well (see attached picture).