To expand on that SE_JonF said.
Most of the normal map should be pretty close to the 128, 128, 255 purple color. The light green and dark purple gradients you see on the texture means it’s treating the face like it’s facing 90 degrees the wrong way. This could be a baking issue or a vertex normal issue, but it’s hard to say for sure. Some gradients, like you in the bottom left with the larger square with the 2 squares, is normal and expected, but extreme gradients are a sign there’s something wrong.
Unfortunately 3DCoat is one of the few applications I use regularly, but I haven’t every baked in. The preferences look correct.