Hanging between MP turns

[Diplominator]

I've developed an obnoxious bug that is making multiplayer games hell. On not all, but perhaps most turns, once everyone is done, my ping to the other players starts rising. Once it hits around 25.00s, the game suddenly remembers it was doing something, and the turn ends normally. This happens whether I'm hosting or just a player. Also, this happens while I'm in mumble with the other players and they can hear me fine, so it's not like my internet is dying intermittently. Or, if it is, it's only dying for Civ.

Any help would be appreciated. I've scoured the internet and found only one reference to the same problem, but no one replied.