So I tried using the /give command to give myself a sword with an attack speed of 1024, which is the maximum value. However, the sword does not increase the attack damage; I only deal 1 health point of damage per hit. I know this because I tried killing a Creeper with the sword, and it took 20 hits to kill it. Creepers have 20 health points, so the sword only deals 1 health point. The higher the attack speed is, the more fully charged hits you'll be able to do per second; that's what it's supposed to do. But it doesn't work. Just make it so an attack speed of 1024 removes the attack cooldown entirely; this would be really useful for servers who have PvP games but also want to use up-to-date versions of Minecraft. Thanks.