Q: Internal display flickering, ghosting, blinking black

Upon opening the lid, the display began "blinking" black, by which I mean that the screen would turn on and off, but when on, only show a black screen.  You can see what I mean here. When the internal display turns off, external displays lag for a second.

Occasionally, the internal screen will show what is actually on the screen, but it will flicker severely and overlay a ghost of the screen about halfway down the screen, visible here.  External displays work fine, though they occasionally tear for a millisecond or two.  The computer works fine, I just can't see what I'm doing.  I'm posting this from the computer using an external monitor.

Steps I have taken in attempt to solve:

- I have tested to see if this is a problem that the OS sees or just the screen by doing a screen recording using Quicktime, and there is no issue in the recorded video.

- Apple Diagnostics Test revealed no issues found (Reference code: ADP000)

- Reinstalled OS X multiple times

- Booted into Bootcamp, same issue with the internal screen

My thought is that this is a bad screen cable, screen inverter, or something else that Apple Diagnostics Test doesn't cover.  Thanks for any assistance you can provide!

Specs:

El Capitan 10.11.6 (15G31)

MacBook Pro (Retina, 15-inch, Mid 2015)

2.5 GHz Intel Core i7

16 GB 1600 MHz DDR3

512GB SSD

AMD Radeon R9 M370X