Plutonium

Hello!,
I just downloaded plutonium to play call of duty black ops 2 like in the old days, theres just one problem, when i join a server i play like to the half of the game and then i loose everytime the connection to the host?.
Are there any advices or something that i can do just to stop that, because it isnt fun when you loose everytime the connection to the host, even though i playing with ethernet and having a good connection.
Please help!.