DeeDeeRanged, What do you do with the Terainshader after you copy it as in:
and copy the terrainShader.xml from where the game is actually installed FarmingSimulator25/data/shaders/terrainShader.xml that seems to do the complete trick. ?
You replace the terrainShader.xml in the FS25_Ray_County.zip to be precisely.
Or you do it like I my in the message below by changing it in the map.i3d. Hope this clearer as an answer.