The Tab targeting is awful. For some reason, its based off what you can see on screen, and not in relation to the direction your character is facing. I've had Tab target an enemy BEHIND my character because I was zoomed out enough, instead of an enemy directly in front of me. The target range is way too far as it often seems to cycle left through right, but it will target enemies so far away you didn't even notice them instead of one again directly in front of you.