Real nice addition to allow a selection of tracks to get wet surface visual and physics.
Nice work, thanks very much , works well with track season mods by deem.
I especially like night wet racing (when you do as suggested at modify SPECULAR_MULT (gives a nice headlight shine on the tracks in low light)
SO far tested mugello and monza circuits with great results
RE Content manager settings, with Custom Shaders Patch:
I did some experimentation with smoke generation and found it's best not to enable the Custom Shaders Patch "new smoke and dust" effects (settings->Custom Shader Patch->Particles FX) or you get a dusty look to the water spray effects. You do however want to have "smoke generation" active (settings->Assetto Corsa->video) which give a more water like spray effect. (which I think some ppl have mentioned in the reviews (instead of as a support discussion topic :-( Anyway thats my preference.
So works fine for me with current shaders patch (but did take some messing around to work out the problem, CM just has too many things to tick/untick :-)
Here is a quick video it in action on Monza circuit(posted same day as this review)
https://youtu.be/fN5yJuyp8Ng
Again thanks for updating these specific tracks for us , very cool, well done.