Hi @Terry_Chappell.
I send you a simplified file with the layers that matter visible since this will reduce the number of meshes involved.
I turned OFF the layers Mesh 0,1 and 2.
Here goes the link: https://we.tl/t-gTUZRuzRUv
Thank you for everything.
PS: Forget about the slope map. The elevation map is already a very good of an extra.
Cheers,
T