Chicken and myself have noticed that we are taking a lot of damage from players with no skill (settle down now kiddies). I asked JoeDirt what the server hitbox value was set to and he advised it was 4.
Here is a player with value 4 hitboxes using priority-box scoring in order of head, feet, torso.
Here is a player with value 5 hitboxes - Advanced (realistic), tight behavior with head, left-arm, right-arm, left-hand, right-hand, torso(2), left-foot and right-foot boxes all tracking animation. Uses closest-box scoring, resulting in more difficult headshots when impeded by other boxes.
As you can see the value 4 hitboxes are huge! These are a high pinger's spray & pray dream.
I suggest setting the hitmode value to 5.