I am having trouble baking a texture from a high poly mesh to a low poly mesh. Some faces remain black. The low poly mesh is cleanly unwrapped. There are no overlaps. There are no flipped normals. I tried baking with a cage and with extrusion. Here are my settings
I have also tried with a higher number (32) of render samples.
Edit: In the meantime I found out that some faces are simply ignored (I marked the corresponding place on the texture in red). Very annoying and probably related to the same problem are the clearly visible seams (marked in blue). I can blur them afterwards, but I can't find a way to make the transitions smoother right away.
Any advice is appreciated.