Initially, we were playing via an Ethernet cable. The settings were: Simultaneous turns, Ghost mode. Towards the end of the first month of the game, strange animation lags started occurring during the computer's turn. As a result, on one computer, the loading bar appears for a few pixels, and on the other, there's not even that result; messages within the game's chat stop being received, and then the game either freezes completely, and sometimes (about 10 times we tried to load it) a message appears saying that the player has disconnected.
We tried to finish the same game by loading from previous saves, but at the same turn, everything repeated. An attempt to finish the save through Hamachi was unsuccessful.
If anyone has already solved this problem, please share your solution.