I have to agree with you right now because usually when I play with my clan we don't run into people who are hacking or cheating but today was unbelievable.
In most of the core game modes we played in, we would die as if we were still playing HC but we would have to use half a mag or more to kill people.
In one game of HC Dom some players kept calling in high killstreaks, like Helo Pilot and Loki but it was impossible for them to ever get one of them because they died just as many times as they got a kill, and not once did any of them go on a killing streak because we always called out enemy positions and killed them before they had a chance to get a killstreak going.
I was planning on getting the PS4 and see if the game is any better there but now I don't even want to waste my money.