After replacing the logic board twice on this MacBook Pro because the left USB port intermittently works and when the computer is plugged into the power source it is still continuing to draw power from the battery, Apple submitted reports to their engineering to see if they can detect an issue with the software, saying it is unlikely it's a hardware issue. I have moved the computer to different outlets in the house as we'll as a neighbors home for testing and the results were the same. 10 to 1 Apple comes back and blames this on X-Plane for drawing too much power. Is it possible there is an issue with the El Capitan version 10.11.5 and X-Plane? The moment I quit X-Plane the computer starts recharging the battery. The only plugins I use are Gizmo 64 & SkyMaxx Pro . The discharge and intermittent USB power loss generally do not occur till X-Plane has been on for an hour or two. Doesn't occur when plane is at the gate or on the ground just when the plane is in the air. Could those plug cause me to use more power than the average user?
My computer:
MacBook Pro (Retina, 15-inch, Mid 2014)
Processor 2.8 GHZ Power boost to 4.00 GHZ
Memory 16 GB 1600 MHz DDR3
Graphics NVIDIA GeForce GT 750M 2048 MB