Yes, we did, but it wasn’t good enough (it was the machine learning system I talked about). We later added EAC as well, the situation improved but cheating was still rampant.
Makes sense, ineffective AC and little server side checks, I think the community consensus was that there was no AC at all. I played dark zone quite a bit, kinda first in the raid looter shooter genre. Had a lot of fun with the jumping jacks "bug".
Its really hard to tell if someones cheating based on the things you can check because it can look like low ping or just a slightly better than average player. In those cases, our genuine best players might accidentally trigger. (which has happened)
There are egregious examples of cheating, sure, but those people are always banned within the hour.
The real killer was the free weekends, it makes it so that there is no “cost” to cheating for a while since being banned on a fresh account has no meaning.