How turn off tile visualization ("chess board" effect) for terrains in the editor?

In the editor my terrains are shown like in the picture. How can I turn off this “chess board” effect for a better pre-visualization?

11276-terrain.png

I could not find any help in the documentation or in google…

Thanks in advance.

underneath where it says scene, click and select “Textured”

Maybe it has something to do with your lightmapping try opening the lightmap window then turn off “Show resolution”