I am having the same problem. I can get into lobbies and set up games, but i can't start a game due to connect. People say I have no connection. But, it shows I have perfect connections. I've seen adjust port numbers and stuff. But I have no idea how to do any of that. I'm new to the PC universe (which I like way more than the consoles) so a lot of this jargon is going right over my head.