Central panel lighting is beautiful if viewed at a certain angle. But as you move pilot's head the shading changes significantly and straight lines appear where lighting disappears.

I used red dots to mark the places where these strange lines appear. Check out how the angle changes shading.

 

Let me ask Anne.

Okay, this is caused because there are so many light sources interacting there and you run into the limits of what the sim engine can handle.  I doubt there is a lot that can be done about that (other then removing light sources).

 

If you reduce the brightness it will probably go away.