ttk? Schrödinger's enemy who isnt undead yet?

Enemies not dying until you stop shooting?
Scared to let the trigger off because the game might decide you didn't actually fill them with enough damage to drop an elephant?
Do you find that no matter what size mag you have, that enemies don't register as dead until you empty it? 

My ping is usually around 8. Im sure my machine is connecting well. Yet this issue seems to occur with most weapons. Increase mag size, downgrade mag size, it doesn't seem to matter. The enemy dies when you release the trigger or run out of bullets. - Ive tried it and found its the same unless you are using an LMGs worth of ammo. LMGs are the only thing where enemy death occurs before the ammo runs dry. Why?

Surely the enemy should register as dead as soon as they receive enough damage to kill them. But that's not how the game works. They stay in some Schrodinger undead yet not alive but not quite dead state. Meaning you daren't lay off the trigger until you run out of ammo. Just in case.

Are we supposed to relive Elias (of platoon) famous death by having meat puppets hang until the bullets stop? 

Can we change this? Please?