All of sudden I cant get into Black Op 2 lobbies. Worked fine since release. About 2 weeks ago it quite allowing me into lobbies. Sometimes at 1am I can get in, but in the early evening can get in. I have tried port forwarding and DMZ stuff, but it didnt help. My NAT is open. Has been the whole time. Other games work fine in live. Any answers out there.
generally speaking, make sure UPnP is enabled on the router, try port triggering instead of fowarding
does it just dump you from the lobbies or not even getting to a lobby?