Those updates are e very good idea.
The way I figure out which texture might be a problem:
1. Park yourself in slew mode just outside the airport, 100 ft or so above the airport.
2. Point yourself away from the airport so it is not in view.
3. If you have blurries now, press Alt-Enter to change display modes, the blurries should disappear (if the problem is at this airport). You can press Alt-Enter again to go back to your preferred mode (I normally do this in windowed mode).
4. Slowly rotate the plane towards the airport, taking close note of when the blurries occur. The object with the bad texture has just entered your view.
5. Once you identify and fix that texture, restart FS to get things back, and repeat the above.
6. Continue until you can slew 360 degrees without the blurries.