The following file contains a set of replacement textures for KSFO meant for lower end systems which might have problems handling huge amounts of textures.
If you are not experiencing any problems with the ground textures do *not* install this update. The textures that come with KSFO by default are of higher 32 bit quality, this replacement set contains 16 bit DXT3 textures.
FlyTampa KSFO textures
To install simply extract the contents of this ZIP archive (21 bmp files) into the "/Addon Scenery/FlyTampa-SanFrancisco/texture/" folder.... or to the respective folder where you installed the scenery (overwrite the existing files).