Umberto,
I must say I am very happy with this scenery. Great FPS and the LOD'ing seems to be the best yet. However I am having a couple funny things with the ground textures when I am arriving and leaving the airport. Here's a few screens to show what I get. Seems like a bit of flickering on the ground and the runways seem to be a little blurry in the middle when appraoching. I am also getting some funny flashing of white through the textures.