You could try tweaking the precision on the material of the skybox, or
quartering its faces.
You could also experiment with a sphere if the cubic geometry doesn't give
you the feel you want. Sky spheres are a bit more difficult to work with
though. I tried it once: You you need to get a 180-360 image (or something
like that, can't remember the name) and map it onto a sphere with reversed
normals. When I did this I brought a sphere from Maya with such inversion,
but I think you can do that directly in Away3D with its primitives now.
