Suspected cheater Maddogggggg on your HC server. It may be too late now because he is now banned on BF4DB. Below are two youtube links of him using an aim lock/aim bot with esp/walling. One the the links is 40+ min and in the description are timestamps of clear cheating. Also, Maddoggggggg has 200+ ping and you'll see him shoot and kill targets that look like they miss, a lot.
longer clip: https://www.youtube.com/watch?v=SUVTpCXk1TA
Short clip in slow motion showing aim lock/aim bot: https://www.youtube.com/watch?v=TcQA5rlG3wo
Battlelog: https://battlelog.battlefield.com/bf4/soldier/Maddoggggggggg/stats/1858942929/pc/
BF4DB: https://bf4db.com/player/1858942929 (banned)
Bonus: in the longer clip there is a player MagnaDefenderr camping in the uncap UCAV spamming.
longer clip: https://www.youtube.com/watch?v=SUVTpCXk1TA
Short clip in slow motion showing aim lock/aim bot: https://www.youtube.com/watch?v=TcQA5rlG3wo
Battlelog: https://battlelog.battlefield.com/bf4/soldier/Maddoggggggggg/stats/1858942929/pc/
BF4DB: https://bf4db.com/player/1858942929 (banned)
Bonus: in the longer clip there is a player MagnaDefenderr camping in the uncap UCAV spamming.