I usually inspect the lobby before a match and leave if there are too many bad connections showing. Sometimes you will see a full slate of green health bars ahead of time. Then the match starts and the leaderboard will show people with barely there (trace red/orange bar) connections; often one of them will be at the top of the board. They are typically very hard to kill, I have used 3/4 of a machine gun mag to drop them when it shoudn't take more than 5 shots at the most. While they are bullet sponges, they seem to be able to kill with minimal bullets (on your screen anyway). Does the extra game activity cause the connection to deteriorate or is it man-made interference? The end result is the same either way, someone gets an advantage.