If ghostships shader doesn't fix the problem it might be how the faces are modeled believe it or not. I've seen things like that before, but not quite exactly, with hard surface models that are reacting badly to Poser's smoothing. Just guessing... probably shader related.

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W10 Pro, HP Envy X360 Laptop, Intel Core i7-10510U, NVIDIA GeForce MX250, Intel UHD, 16 GB DDR4-2400 SDRAM, 1 TB PCIe NVMe M.2 SSD

Mudbox 2022, Adobe PS CC, Poser Pro 11.3, Blender 2.9, Wings3D 2.2.5

My Freestuff and Gallery at ShareCG