[suicideneil]

Sounds like its 'browning out'- lack of power to the rx when you hit the throttle causes it to turn off momentarily. One solution is a glitch-buster capacitor, though it doesnt work- depends how power-hungry the servo is & how well the lipos hold their voltage under load. Another option is to use an external BEC to power the rx and servo ( weak BEC circuit on the esc is the usual issue- fairly common with the MMPro ).