I have also experienced this sudden change of ground textures at Corcheval Airport (LFLJ). When taking off in a Bell 407 from the airport I can see beautiful ground textures around me. When I am flying forward the vivid textures of the same tiles changed to dark ones. This is very immersion breaking. The texture of the same tiles is shifting below my nose! I searched and found this post. I can accept vivid OR dark textures. I can accept high resolution OR low resolution textures. But not shifting ground textures! Any way to keep the ground texture stable?