Since the latest Xbox One update came out, my Xbox has been acting weird. 

It keeps losing the controllers,when it does this, the light on the controller starts flashing , then stops completely -  and if it does acknowledge them, go to a 2 player game, and it recognizes both controllers as the same player, rendering 2 player game useless. Ive tried re-syncing them via the USB cable, the button on them, but no go.

Any ideas before I do a factory reset ?