Someone else having or had the issue with DD Leipzig that the ground textures of the surrounding airport are not loading or loading very slow. Rest of the world and airports are fine also the scenery itself is good. So no problems with the terminal or the apron. Its only the surrounding. Its green (as on the photo) and then it instantly appears as normal and that continues till you have passed the whole airport.
You can see the area not covered by the scenery is sharp and good but the airport is not while the ground layout is fine.