Install: The config from the archive needs to go into your "..\AssettoCorsa\extension\config\tracks\loaded\" folder. Custom Shaders Patch and Sol dynamic weather are needed for the effects. The animation of the lakes needs the stFlow shader so if you haven`t already installed it I suggest you do that first. Then extract "bcc_water.kn5" into your "..\AssettoCorsa\content\tracks\ks_black_cat_county\" folder and for it to load the following have to be added to the preferred of the "models_layout_******.ini":
Observe for correct sequential numbering of the paragraphs.
For better eye comfort I recommend to use this for brightness: