It takes 11s from the moment the unit get's in the range.
From the victim PoV, it takes shorter cause the animation starts a few seconds later which is why it looks "fast".
Outside of considering whether 11s it's fast or not i would make it based on number of models equals to 4 been the maximum number.
For comparison sake, the Salvage from UKF takes around 13s to salvage a 50% wreck (all vehicles start at this value) and it depends on number of models.
