I get some ugly artifacts around large stars when I roll the ship. Turning off texture compression makes them disappear. This isn't a huge issue but I was playing around with recording ..so finally had a way to show it off. It doesn't really show up in screenshots.

Here's what it looks like: http://www.youtube.com/watch?v=21F0EPmBXBs

If that glow effect would spin with the background it would probably be much less visible.

It's hard to tell what's from the texture compression and what's from the video codec. :/

Yeah.. maybe turning off the background would have helped.

That glow around the star looks a lot less "patchy" in the part without tc.

Yeah, so do the nebulae in the background. I think slime has a couple of really good comparison shots too.

Texture compression isn't supposed to be lossless though, it's kind of expected to make things a bit uglier.

The compression artifacts wouldn't really bother me. They just reveal that the glow effect isn't rotating with the background...which looks weird.

That setting causes the textures to be run-time compressed if they aren't already compressed by us.
The run-time compressor in the OS's driver isn't the best either.

The glow effect has horizontal and vertical "lobes" with texture compression off too. It's pretty obvious on some of the smaller stuff like station lights.