Mesh lines visible in Cycles renders and Cycles viewport

[masterrenderer]

When importing an FBX file in CC4, either through the import button or through using the datalink and clicking on the send avatar button, and using Cycles as the render engine, I get these grid lines, which look very much like the mesh lines. I'm using Blender 4.2.3. I tried switching between GPU and CPU rendering and it occurs both in the viewport and using the render button. It only happens on skin shaders, all other materials/shaders look fine.

I also tried with Blender 4.0 and 4.3, with Blender 4.0 I get the same issue, in blender 4.3 I get a shader error.

[masterrenderer]

I have found it's caused by the subsurface scattering SSS Skin general slider, when I lower it, it diminishes it, but gives a less realistic look.

[soupday]

Edge artefacts in the subsurface scattering on the skin.

Best way to reduce it is to subdivide the body mesh, at least 2 subdivision levels should remove it.

In the Scene Tools panel there is a Cycles Setup button, which sets up Cycles, rebuilds the selected character's materials for cycles (if you haven't already), separates the eyelashes and applies subdivision modifiers to the character. It should resolve all these cycles issues.

[masterrenderer]

Edge artefacts in the subsurface scattering on the skin.

Best way to reduce it is to subdivide the body mesh, at least 2 subdivision levels should remove it.

In the Scene Tools panel there is a Cycles Setup button, which sets up Cycles, rebuilds the selected character's materials for cycles (if you haven't already), separates the eyelashes and applies subdivision modifiers to the character. It should resolve all these cycles issues.

Thanks, that did the trick!