It looks better on the show than in those shots. It's mostly down to the lighting, I imagine. Maybe those are also some sort of "draft quality" mode.
No. The problems with the model can't be explained by program or rendering error. If you look at the top of the saucer, almost every feature is either bent, warped, or mis-aligned, and it's still really obvious on the show, especially with proper lighting.
Now, they did this to the Prometheus
, which was a really beautiful, well-thought-out design before Foundation mangled it, but this is pathetic even by their standards. This is the hero model
. They had more than enough time to do this right.