We had Teamspeak problems in customer multiplayer sessions (19 Player). A lot of voice distortions and a few player couldn’t hear some other people (NAT is definitly open). Is there any fix in progress?
http://forums.forza.net/turn10_postst42782_SUPPORT--Multiplayer-connectivity-issues.aspx ?
Teamspeak is not implemented on the game; guessing you are talking about the built-in speech options? Also, but sometimes people fail to adhere, I assume every single person in the lobby is compliant with the minimum requirement of having 3Mbps downstream and 0.5Mbps upstream.