On my TV setup - there is obsulotely no light banding / layers of light on the horizon, but the mountain ridge is still faintly visible. If you are experiencing some undesired banding - try lowering your monitor / in-game brightness. On the other hand if it's too dark for you, try increasing them. My in-game brightness is set to 10 and my TV's set to 45 with Dark levels at "darkest" (see description)