Sync error with other players after 40mins ingame

[Ioannisrag]

Hello dear COH players,

I play Blitzkrieg with 2 friends and we start our match flawlessly. After some 40mins though, we start to find out that each one of us are playing a different game: I see that my troops are in a place where my friends don't find any. Also, my friend's troops are in a very different place where they really put (we communicate through skype and they confirm that they have some troops there but I don't see them there).
This also happens between themselves.
I believe it is some syncing error, but I have no idea how to fix it. Someone please help us

[Don Daniello]

We have the same problem.

We found that this only happens when you mix factions. If you only play e.g. Americans vs Wehrmacht, it will work fine. If you mix Americans and British, it will run out of sync.