Are you sure it's this mod and not the A Quality World Map - With Roads Classic? That one definitely has that issue. I just flew around the map from High Hrothgar and saw no hint of it.
In Gophers LP he had some distant terrain turn brown/orange after installing this mod.
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I think that this mod sidesteps that whole issue by way of having an elevated mesh floating above the regular LOD, which I think is why the mod screws up when your mod order is wrong. You track the regular map underneath. Just conjecture though.