Tried the following...
D:\DCS World\Bazar\Terrain\Structures\High\EDM
renamed to trees*.edm.BUP
D:\DCS World\Config\terrain\High.lua
knocked 00 off before decimal
treesFarDistance = 15.0;
treesFarFullBlendRenderDistance = 12.0;
treesFarFullRenderDistance = 10.0;
treeslodDistance = 6.0;
C:\Users\Pinkie_Button\Saved Games\DCS\Config\options.lua
FROM
["treesVisibility"] = 15000,
TO
["treesVisibility"] = 15,