I've recently updated my adobe applications to their CC 2015 versions.
Everything looks great on retina screens (2013 Macbook Pro), but on my Mac Pro, the Illustrator interface pixelates graphics (viewing on Mac 2010/2013 screens). I've embedded a screen shot of what I see.
When I export/save-as, everything looks correct -- this is more of an annoyance. Didn't have this problem in the last version.