Ever since 1.7 was officially released I had noticed my distant LOD textures becoming increasingly bad, and its easier to notice, I play with ugrids 7 and tried deleting my SkyrimPrefs and Skyrim inis and remaking them but its still the same. I've tried reinstalling the game completely and playing without mods, if you stand on the watch tower in Whiterun plains and look out it looks absolutely terrible.