We haven't gotten much checksum info, though what we have gotten lead us to resolve a couple issues.
Playing with Checksum logging on will severely slow down the game, so what I suggest is this:
In your rebellion.user.setting file:
(in My Documents\My Games\Ironclad Games\Sins of a Solar Empire Rebellion\Setting\rebellion.user.setting)
0) Run the dev exe (you'll need to run this manually from the install directory). You should only play using it, not the release exe for this for now (dev exe flags desyncs a bit better).
1) Exit the game.
2) Set SaveCheckSumSnapShotsOnSave to TRUE.
3) Set AutoSaveTickFrequency to 60.
3) Start a new game, use the same maps, same races, all the same settings, etc.
4) Try to replicate your play pattern each game.
If you desync, exit the game and in your rebellion.user.setting file:
1) Set IsCheckSumLoggingOn to TRUE.
Load up your autosaves until you find one where you're not desync'd. Play until you do.
Send the first good autosave and all the ones in between that and the desync, along with your CheckSum files (in the CheckSum directory in My Games) for each player (zipped) to
[email protected]. Also include any steps you may have found that reproduced the desync along with game settings.
We really need to have the files from every player involved - one person's logs won't help. But this way you can play the game with good performance and then only need to deal with the checksum slowdown once you've hit one.