Yes it looks like the tangent handedness is not set up correctly in Painter. You can try inverting the green channel or adjusting your settings in Toolbag or Painter.
In Toolbag you can set the Tangent Orientation to right- or left-handed. Right matches the "OpenGL" format in Painter, and left the "D3D" format.
Replies
Try inverting the normal map on the substance
1. right click layer and add levels
2. select normal channel
3. select green channel
4. click invert
Yes it looks like the tangent handedness is not set up correctly in Painter. You can try inverting the green channel or adjusting your settings in Toolbag or Painter.
In Toolbag you can set the Tangent Orientation to right- or left-handed. Right matches the "OpenGL" format in Painter, and left the "D3D" format.