Im sure Respawn are constantly fighting this problem.
Its the scourge of FPS gaming and a constant game of whack a mole. Respawn will find a way to find the hacks, the hackers will then update their code to hide their hacks again.
One of the best ways to play this game and I dont know if Respawn are doing it, is to analyse player data and determine whether their actions are beyond the level of a skilled pro player would demonstrate. ie: Is there accuracy regardless of distances to high, are they facing the one direction and then sudden about turn and headshot someone. One hopes they are improving the the technology to determine people using hacks as purely trying to identify the hack on the client side is just a game of whack a mole.
Either way, its a hard problem to solve and people like the OP whinging about it, should just give up FPS games as they all have this issue.