I notice your bump depth is .9 cm, right? That's enormous. You're creating a virtual surface that has hills and valleys that are way bigger than you realize.

Disconnect the bump, and use displacement - put .9 in the displacement and observe what you're doing to the surface.

Bump doesn't move the surface like displacement, but it still calculates the angles as if it had moved.

It's hard to tell exactly what is in your bump map, but if it's all bright like that, you're pushing the whole thing out. In poser, 0 = black and that is the only value that doesn't move the surface.

You should be using an offset, subtracting the neutral value of your map from the map itself, so that your neutral value causes no movement.

For example, if gray 180 is supposed to be "no change", then you should be running the map into a color_math node and subtract gray 180 in Value_2.

If you have gamma on, this gets a bit more complicated.

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