Looking at the AI settings they appear identical to what it was in 2.21. Same difficulty preset also. I didn't see any hardcore mode.I think the numbers have changed for difficulty levels, hardcore being absolute brutality with almost maxxed out ennemy settings now compared to before, so i think it's safe to say your usual settings might not be the same as they were. Take a look at your ennemy difficulty settings. (aim time and all that stuff)
If you find the game too easy...
just change your settings bro...
It seems they have changed the AI on a more fundamental level that results in them being total spastics relative to AI settings. Now I have no gauge on how to balance them properly.
I think on a more technical level AI ballistics are flawed in this game, which is to say I don;t think they can be balanced properly or realistically as AI targeting calculations use some type of seed-based aim-botting which manifests in them being horrible 99% of the time only to pull one-shot tricks out of the bag as if it were a scripted event.
Just seems very inconsistent. Almost every death in 2.21 was a result of being one-tapped in the face 0.001 milliseconds after engaging. Felt extremely suspicious. In this version they are flat-out terrible on every level. Might be safe to assume they just removed the Aim-bot script or whatever it was.