I decided to try rendering with IDL emitters.  The light really looks great.  But I noticed some issues.  At first I thought I was having trouble with the peculiarites of the lamp emitters sold at RDNA.  But further testing shows that I have the same problems using simple white hi-res squares, which are what I've used in the images here.

M4 displacement maps (sold at Daz) do not seem to be compatible with the default EZSkin shaders under IDL emitter light.  The displacement turns blue when rendered at higher resolutions.  Changing render settings has little effect. I tested a range of settings with IC from 30 to 100, and with IDL quality from 7 to 100.  I kept the min shading rate at 0.4, though when I rendered once with a min shading rate of 4.00, the blue did not appear.  However, that's not a usable solution.  I note that the blue is not easy to see on a skinned figure at lower resolutions.

What am I doing wrong?

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PoserPro 2014, PS CS5.5 Ext, Nikon D300. Win 8, i7-4770 @ 3.4 GHz, AMD Radeon 8570, 12 GB RAM.