Using different flight controllers I had noticed that every now and then one of the motors would lack a little bit. I had been running the f/c and the receiver from the built in esc that supply 5v at 2 amps. While in idle I noticed one of the esc was getting slightly warm and noticed the others was not. It was the esc that powers all the other electronics. I put this in to run my electronics from it. Now everything runs cool. Good deal!