Normal map artifact

[Kororuz]

Hi there! Can you give me some advice? I created a UV similar to the SCS for my normal map texture. I did it for one half of the model, then I mirrored that part and combined them. All vertex are welded. There was an artifact in the middle, and I circled it red. The yellow oval is completely flat. It’s all modeled like the developer model, but the developer model looks great and my model is distorted in the middle. How is that fundamentally different?
I don't understand...

Tobj and dds files link^
https://sharemods.com/r3tb85ursb07/CFR_ ... m.zip.html

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[Digital X]

I've seen this a lot i think it's either you need the "weighted normals" modifier applied, or to use vertex paint at 0.5 and apply that to the part. I tried to replicate the issue in Blender but it won't work for me.

[Kororuz]

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Vertex color is fine. "Weighted normals" modifier creates some changes but problem remains (video)...

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[MatzeH]

Try to not use mirrored uv meshes in the nmap uv-layer. I think mirroring half side of the mesh mirrors the nmap data as well. better unwrap the whole mesh.

[Kororuz]

It's true!