This video covers a couple of simple fixes for the ZBrush to Substance 3D Painter workflow using the ZBrush compositor pluting. I also share a bit of theory so if you want to skip to the practical solution you can go to the 15 min mark or to the 25 min mark for the ‘re-lighting technique’
Fixing texture artifacts in Substance 3D Painter
When using the ZBrush Compositor plugin, it’s important to remember that the workflow consist of a series of 2D maps (BPR renders) being projected on a single-sided plane with displacement. This process creates a convincing effect that displays the 3d volumes. However, there are certain features in Substance Painter that might not behave how you expect.
In the video tutorial from this guide, I go over a simple fix to remove some ‘artifacts’ from the texture as a result of the tri-planar projection.
If you are familiar with the way substance works with tri-planar projection, all you need to do is turn it off in the layers/generators/masks that use this property so that the projection is done based on the UVs.

Artwork by Magdalena Dadela

Artwork by Magdalena Dadela
ZBrush Compositor plugin
This is a video series introducing you to the ZBrush Compositor plugin to render ZBrush sculpts with Marmoset and/or 3D Painter
Check it out