Hi there,
A friend and i just completed a lan game on the Entrenchment beta 2.5 and had some very strange sync issues throughout.
We were playing a 6 man map (Triumvirate) and it was the two of us vs 2 teams of 2 normal cpu.
The game was going fine until at one point i noticed one of the cpu teams making a joint attack on one of my team mate's planets in our home system. But he couldn't see that going on at all.
This strange sync continued throughout the rest of the game. Sometimes one of us would build some ships, or a starbase, or even capture a planet and the other couldn't see it at all. Most manual orders, ie. moving ships within a gravity well, pings and so on happened just as they should in real time, we could see each other's actions immediately, however other times the games seemed completely out of sync. By the end of the game, i actually received the victory screen, whilst my team mate could still see one of the enemy (who was dead for me) attacking and taking some of my planets.
Just found a couple of threads talking about the same, or a similar issue, neither with responses.
https://forums.sinsofasolarempire.com/339782
https://forums.sinsofasolarempire.com/338759
Saving the game and reloading doesn't fix the sync, but we can provide the two versions of the save file that my friend and i have of the above game if necessary.