Left4Dead2 Visuals Multihack

I've noticed when using Sharp Charger sometimes when I grab someone it'll crash the server, it does the same function as when you hold lag key as charger as soon as a survivor is grabbed. I like to do this thing where I spam "who wants to play ping pong" so I bounce around and if I nab a survivor it instantly puts on the Disconnecting Screen countdown and crashes everything. The only way it doesn't happen is if I don't grab the survivor too quickly