How can I blend Skyrim mod textures with vanilla mountains without issues?

[Paisley46]

I finally got the Skyrim mod that adds a whole new region to explore, but the new landscape textures are a complete mismatch for the vanilla mountains. It’s creating this awful, sharp line in the distance where the two meet, and I can’t figure out how to blend them properly without breaking something else.

[SofiaL]

Yeah I ran into that recently. The new region's textures clash with vanilla mountains and you get that hard seam when you look off in the distance. I tried a couple of different texture packs that claim to blend with vanilla, but nothing lined up perfectly and the line still showed up.

[Harper.L]

I checked load order after reading about overrides. I ran LOOT, switched a terrain mod earlier in the load order, and still saw the seam. It seems like the region is literally swapping in a tile at a range where the vanilla tiling ends.

[AbigailQR]

Gave it a go by matching tiling scales myself. I opened the files, counted the repeats, and tried to mirror the vanilla tiling on the mod's image. It helped a hair, but the line is stubborn and shifts with angle and distance.

[VictoriaFB]

Could it be the real problem isn't the visuals but how the terrain is generated at distance or how the lighting hits the edge? I started drifting into that thought after a day of chasing the seam, but I can't pin it down yet.