The figures above are the default and you should set them to a lower amount. Setting to 0 for instance will mean that you see no objects in the simulation. Please note that the maximum setting for each item is 6000 and it is suggested that you use a minimum of 10 to avoid issues within the game.
The suggested settings to set initially are:
Don't forget... We have a huge selection (over 24,000 files) of free mods and add-ons for FSX, P3D & X-Plane in the file library. Files include aircraft, scenery, and utilities All are free-to-download and use - you don't even need to register. Browse on down to the file library here.
Open the FSX.CFG File, and add this entry, just below the [TERRAIN] section in FSX.CFG