This track with the addons is really good and seems very similar to the real version, the only issue is the invisible walls that are past where the actual walls are, making it impossible to get close to the wall. The AI needs work as well, they are not slow but they don't drive the fastest line so racing them is boring, I will be eagerly waiting for an update.
The road texture, walls, fences and trees are exactly the same as all of the other tracks I make, can you confirm you are running the latest version?