In playing a co-op game on Doppelgange with a friend last night against two AI. Aside from a number of crashes we found this truly peculiar de-sync. We stayed in sync up until the point that the AI capped the Occupation Planet. When we received the notice that the AI had capped the planet, both my friend and myself sent units to the planet, but neither of us could see each others units. He capped the planet, but to me the AI still had it. I had sent my Titan, and when the it arrived at the Sun to then proceed to the planet my friend could see my Titan moving, until it went to the Occupation Planet. 

The network panel of Sins still said we were connected with reasonable pings and we could type messages to each other. About 6 times we quit the game and loaded a saved game. Again, every single time once the AI occupied that 5th solar system we went out of sync.

Because of all the times we quit and re-loaded the game I'm not sure what data would be specific enough to be helpful since i didn't set aside the new information every time I reloaded the game (it was 1 AM, I wasn't thinking clearly). I'm not completely sure how to proceed to make sure I get the right info since i suspect much of it overlapped. I'm also curious if anyone else has had this issue.

Thanks.

*edit* as a side note I can't find the Sins Dump folder in the Temp folder. Hidden files and folders are configured to show. I looked here:

C:\Users\[username]\AppData\Local\Temp\Sins Dump