Unreal Engine makes something weird with my normal map

Cirmius

Hi,
My normal map goes wild on Unreal Engine 4, while on Blender/Marmoset therer's no such thing. The edge looks like this in viewport:

And probably the troublemaker on the texture:

But as I said before, I don't have that problem on different enviroments. Also smuding in Photoshop this area/transition makes no difference.

Turning off "tangent space normal" kinda solves the problem, but makes another artifacts + the model looks so flat that it doesnt need normal map.

Obscura

Looks like your green channel is inverted. Open up the texture in the content browser and enable "flip green channel".

Cirmius

Obscura said:

Looks like your green channel is inverted. Open up the texture in the content browser and enable "flip green channel".

Thanks boss!! It worked ^^ I've tried to read something about why this is the cause and as I understand correctly this is due to the OpenGL/DirectX. Problem in my workflow is because I didn't prepare Marmoset Toolbag for Unreal Engine. The solution is here:

https://polycount.com/discussion/185169/confused-about-tb3-baking-unreal-workflow

Thanks again!