"... Overall, I’d say performance is about the same, the 3D trees do slow things down a bit, but optimising the lights, removing the millions of 2D tyre marbles that relied on alpha transparency to work, better groove line methods etc should balance it out...."
A big YES! At last a track that don't suffer the "3D Trees Nightmare of Exasperating Fps Drop"! Your great optimization not only make don´t lose fps, in my case I even gained a couple more...
Thank, Master.
Let's take this into the discussion thread so we can get to the bottom of your issues.
Do you mean we cant change the colour of the tyre walls via a skin? If so you can still do this by editing the texture that is used for them in the 'extension' folder.
And, sorry but I'm not sure what you mean about the drains on the concrete walls.