distance recognition - distance, where aim can lock on enemies. If distance recognition 10 m and your enemy twelve meters from you, then aim will not work for him
About close range: you need to increase fov
X/Y speed and humanizer individual depends on ingame sens and dpi, i am using 15/15 and humanizer 1 (my dpi is 800, ingame sens 7) if you want to more legit play use Y-speed 0, this way you can choose for yourself where to shoot, in the body or head. FOV - better to use between 90 and 120...