I assume the vast majority of people don't know if they have a bad connection. People are connecting off of their mobile network and playing on wireless internet and wonder why the game lags. This is not the only reason, though. You can experience lag, even if you're playing on a stable, hard wired connection. I believe there are three main variables that are causing the lag. #1 - Lag on the player's end. High bandwidth does not mean you have a stable connection. Ping and jitter are the most important variables. If your family are watching Netflix or downloading films, you're probably going to see lag. Even if you have a lot of bandwidth. #2 - Horrible netcode. Kill trading is rampant. I have never kill traded this much in any other FPS. You kill someone (they have zero health), but they don't die straight away and kill you. #3 - P2P servers. One player in the lobby has to host the match. This is never going to be as stable as dedicated servers. This costs money to implement, but it's not like Activision haven't made a killing on Call of Duty and Destiny. They could easily afford to implement them, but they don't care enough to do so.