One of the things I have noticed is when someone is struggling against me the game lags severely when I have the ball, but then when they have the ball there are no connections issues. I usually always get a prompt that your opponent is experiencing network issues, but then pauses and resumes but with a lot of lag. It never happens when they have the ball.
I think what is happening is that they are loading up bandwidth with other devices when they play defense which bottlenecks their bandwidth which causes the game to lag but never disconnect. Then when they have the ball they remove the other devices to alleviate the bandwidth issue. Its probably just kids that are doing this, but its real annoying though.
