Tactical Processor is what you need to attach. if you would like your automaton to respond to sc more quickly. Aside from the elemental magic casting recast timer there is a speed of which your automaton will decide to perform an action tactical processor increases this speed and allow for faster respond to the givin event

Example:
Shield bash is not in recast and an nm uses a special attack with tactical processor your automaton will most likely stun this move; without it, it is a gamble if the timer processing the event will occur with in the window of the stun