Took the words right outta my mouth.
Main thing is the usual damned Gamespy garbage. Same thing happened with
BF2. Had to create a whole new account to get it to work.
This definitely has to be fixed as I'm CERTAIN it's keeping a lot of people offline, 'specially judging by the people in-game.
Me and Beatnik literally had the FIRST COOP game in GRAW PC history (since release). Or it sure seemed that way. You could count the people playing easily and most were in domination. I bet most people are having problems and flooding Gamespy and Ubi with support issues.
All in all though, I was impressed with the smoothness of the 4 people coop games. Granted, I was runnin a server on a 6mb/512k connection so it shouldnt be a problem. we DID have an initial sync issue with people behind routers but it cleared up.
Remember, you cant host if you're behind any kind of firewall. Research your ports and open them as necessary. Helps sometimes also even if you're not hosting. Some games are picky like that. Me, when I'm hosting I pretty much open ports from 2301 to 65001 - both TCP and UDP... same as
BF2. Just close em when you're done.