Since this patch the few games I've played have had some of the worst lag I've experienced in this game period. Some of the worst I've experienced in any of the past few Call of Duties (I'm talking across matches, and lobbies, not just one bad connection lol). I'd see someone and get Connection Interrupted, then I'd see someone and the screen would freeze for a second or two, no Connection Interrupted, but the screen would un-freeze and I'd be watching a killcam. I don't know what they did but their "fix" for the connections and hosts has been the worst I've seen personally. More host migrations than usual, more lag spikes that result in deaths, etc.
Probably going to try to play a few games tomorrow to see if it was just how the connections were but I don't know, it was noticeably worse than normal, and like that in practically every lobby our party joined.
