Let's see what we can do to help the devs hunt this one down. Anyone else with this problem up for it?
Info like map sizes and DLC enabled would help.
I uninstalled GalCiv3 (again) and deleted the folders mentioned in the support knowledge base.
Since all of my games that got stuck were immense maps, I'm going to start another immense map, but this time with all DLC unchecked except for the Snathi. This problem predates the Snathi DLC, so I wouldn't think it would be part of the problem.
Since 100% of my games started in 1.3v2 Opt-in and 1.3 release have failed, this one should as well sometime after turn 100.
My other games were in windowed mode, but I'm starting this one in the default full screen mode.
I'll be playing a vanilla game as the Snathi against vanilla AI.
No mods on a clean install.
I'll update this thread if it goes into eternal wait mode or if I complete it.