X-Plane 11 different mesh comparison

X-Plane 11 standard mesh vs AlpilotX UHD-mesh vs a custom made mesh: I used the 1'' resolution digital elevation data from here: http://www.viewfinderpanoramas.org/dem3.html , created the tiles with the Ortho4XP software (curv_tol set to 0.3 to gain around 30 million vertices per tile).