Those are some weird bugs, bugs I haven't had, ever.
So no idea on that, but Melee Weapons are overpowered in this...
Probably because you are playing on an easy difficulty.
^
Not to mention Boone (Your companion, I think that's his name) is
the most overpowered guy in the game. He kills enemies before I even noticed them. (Took 1 headshot to kill the nightkin)