Along with many other people I have noticed that the AI's aiming and turning looks strange and unnatural. This problem is a result of the AI's entire torso moving where they aim. If they used the "Dead Zone" which is available to players, they would look so much more natural and human. Instead of slowly rotating their body to track targets, they would just move their weapon like normal people. And in CQB environments, when an enemy suddenly appears they would just be like "Oh crap" and swing their rifle to point at you. My suggestion is to have their "Dead Zone" set to the maximum so it looks the most realistic. Since they do not need to use a video screen to spot targets they would have no loss of spotting capabilities. This will also improve the stealth of AI because they will minimize movement and will be less noticeable.