The thread at SOH refers to a tweak for "the blurries" and, in turn, refers to this article by Bill Womack
http://iblueyonder.com/fsx-relief-for-the-blurries/ From what I've gathered this allows textures to pop in place further ahead resulting in an improved LOD. Strictly an appearance tweak but relatively painless to try. In FSX.cfg add the line "MipBias=6" (without quotes) under the smaller DISPLAY (the one describing your video card, type of filtering and antialiasing). In your card settings or Nvidia Inspector, make sure the line - 'Negative LOD bias'...says....'CLAMP'. Note Bill's article is dated 2007 - nothing new under the sun.