>>722989101 (OP)
All you have to do is put realistic bullet physics in the game and not use hitscan. This filters out 90% of legit players and cheaters from play-styles like sniping.
The only reason this was ever a problem is gaymers are retarded and get what they fucking deserve. They say realism=/=fun because they just don't understand what they want. They think they want ease and convenience but in every case this leads to rapid lack of interest, then the eventual total ruination of the game in question. They don't know what they want, they prove it on reddit, youtube, official forums, every place they're allowed to voice their criticisms, every chance they are given. They'll bitch about something nonstop while still sinking 8000 hours into the game, trying to get better at what they're bitching about. This is how you know your gameplay formula is successful. The moment you capitulate to them your game dies. You don't give the labrat the easy dopamine button, they'll just mash it til they get burnt out as quickly as humanly possible, there must always be a steep learning curb for high reward gameplay styles like sniping and making it realistic is the easiest, simplest way to do that.