Having just played my first games of PTW this weekend, I can say that inspite of the troubles, it is a lot of fun. I enjoy the setting up, empire building when competing with other humans. Its not nearly as fun with the AI as far as Im concerned.
But, the game does try its hardest to put you off Civ. Given its only got to transmit unit movements which shouldnt generate much traffic or be ping dependant, it somehow finds means to make 6 player games really laggy. Even in a turn-based play mode, there are really unusual things that it seems to confirm with the server before letting you do them.
And trying to get into a game sees one spending a good hour or so. I have just tried 5 or 6 potential startups, of which I crashed once, the host crashed once, 2 other hosts didnt realize they couldnt host games due to firewall issues, and the others saw me and some connect but due to not having the full compliment of players connected, other players left.
It is quite trying.