I tried the AA trick lowering from 8X to 4X and the muddy/blurry textures snapped back to sharp, as a test I went back to 8X and immediately the Earth and stars blurred, going back to 4X made them sharp again, so maybe this is a temporary fix. Just thought I would share my results.
First this was just on my Envoy class ship, and it went away when I changed to Celestial. A few days later I tried again making my ship Envoy, and the bug came back. So I changed it back to Celestial again, and now the bug is on that as well.