can't buffer video due to internet, so having to watch in 144p lol
But i did see the mesh with the same texture across it all instead of the pebbles.
It is a strange error and i'm not sure what the problem is without seeing the files personally.
In fact, this would be a good mesh to test the new material system with as i have too check lod's are working and need a multi part mesh. Just couldn't download it if sent.
Can you upload the mesh and material file file for the base track. I should be able to see then and maybes download it lol.
If it is the base mesh, then you would expect it to work like all the others which has been fine for a long time, or was the lods built into that alone mesh. Couldn't quite tell due to video quality.