So far, so good. No freeze in planet invasion. In battle viewer though... That's another story
Ok, it's not as bad as it was. It happenned only once tonight, in about 3hrs of play.
I'm submitting my debug.err in case it's useful to one of the devs:
https://www.dropbox.com/s/qd8k1cqxoc7z279/debug.err?dl=0