Screen flicker MacBook Pro 15" mid 2015

I have a serious screen problem on BOTH my two MacBook Pro 15" mid 2015

(A1398), 2,8 GHz, 1TB. The screens have started to flicker (see photo).

It flickers (mostly in the lower half of screen), then stabalizes,

flickers, on and on...

This problem is not visible on external monitor, has been concluded by

Genius Bar to be related to the screen (only) and is independent of

MacOS version and programs beeing run. Because I have the same problem

on two computers it seem like this could be systematical and related to

poor procuction quality and/or bad design.

I got this panel when the original panel was replaced

because of "Stain Gate" problems. It failed EXACTLY one year after it

was installed (in March this year). When going back to Apple-store they

said that the warranty on repair (actually changing a complete component

= one new screen, my rem.) is only 3 months so I have to pay for the

repair myself ($800).

Because of serious time shortage and the very high cost for changing the

display I bought a second used (identical) computer instead (to deal

with the former computer later). Now, four months later this "new"

computer has started to show EXACTLY the same problem. I do not know if

the screen on the "new" computer has been changed during its life or

not.

Is there anyone else out there experiencing the same problem?