how does the lvc on the MMM work?

[blueb8llz]

so ive ran my truck about 6 times now, and all 6 times i turned off the esc before the lvc hit. i notice a pretty big drop in speed and torque so i usually decide its time to bring it in. i run the truck at these speeds for even like another 5 mins and the lvc still doesnt kick in! from what i hear, usually people say its just a slight drop in power and then a minute later the lvc works. first of all ...how does the mmm lvc work...does it slow down like how mine is doing? or does it just shut my truck off..or what? im not running no cheap lipos either...its 4s neu energy so what gives?
i have my mmm set at auto lipo which should be 12v.