Hello tuanha, i noticed kill shot spam is much better now but i found out the kill shot cd reset has an internal cooldown(it used to be 6 seconds apparently) so it can be used twice in succession if it doesnt kill but it goes on cooldown after second shot it seems, and after that i get spam of ability on cooldown, also it does not use the draenor perk of mm hunter which enable to use killing shot on 35% health