My friend is hosting a co-op game and I'm getting disconnected from the game all the time.
Can't remember when the regular "Your connection to the host has been lost" messages started (whether it was right from the start or mid-game), but now in end-game (90+ villagers) disconnects are so prevalent that the game is unplayable. The problem also occurs in Halmare Isles.
(I'm also getting random crashes without an error message.)
I included the logs. If you need the save file, I'm sure my friend can provide it.