Strange Tiling Issue on Landscape Material?

I replaced parts of the Brushify Autolandscape Material, following one of the tutorials on youtube, but I cant seem to get rid of these weird black lines? No matter what I do. The lines seem to get worse over time in the editor and I think are related to the tiling of the landscape material, far away it looks fine, very close as well. Any ideas?

It’s very hard to see anything there, it’s way too dark.

But from what I can see, I’d say it’s not a tiling issue, but a UV issue. Have you done anything to the feed coming from the landscape coordinates object?