kin3tix,
I was the host, and the game was crashing throughout various parts on both sides either him or myself. It was just us two playing against 6 AI players (although I would love the option to have many more AI players.)
We would get various peer disconnected errors or complete crashing. Sometimes the game would lock as it was switching between turns for a minute or two and then continue.
When exiting the game to menu, it would either crash the game or exit the game completely (no error messages given in windows so don't know which it was doing)
Steam would not relaunch game unless you forced closed Steam (happened for both of us) and re-opened the Steam client). Hope that helps.