Problem with turn passing in multiplayer.

The mods are the same for both me and my friend, and the list of maps is also identical (plus the ones we added). The problem is with the installed mods; should we remove them? Or could it be the map we're playing on (it's a downloaded map)? Although, as I recall, a similar problem occurred even in ghost mode on a standard map, but we didn't pay attention to it, attributing it to a bug.