I was trying to see if anyone has reported this here, but there is none. You can just try it yourself when aiming your gun as it feels a lot more sensitive than your camera sensitivity. This is with mouse and keyboard so I can't say about controller. Also there is no option to adjust gun aim sensitivity on itself which is an issue imo since games with guns that allows you to aim always have them from my experience.
#Gun Aim Sensitivity Higher Than Camera Sensitivity Setting
weary delta