Skin material renders in IPR but not in PV using GPU

[daniel2SH2D]

Hi

I am rendering a DAZ character having ported the materials across to aiStandardSurface shaders, with transmission, sss, normal and bump.

There are darkish lines around the UV seams, and when rendering on GPU, for some reason the legs UV set won't render correctly. No problem on CPU, other than the seam lines, but I'm really concerned at why one sepecific UV set won't render materials correctly on the GPU...same shader setup as all the others, just different ref files obvs...

Any ideas? I'm stumped, and want to use the GPU for the scene

[daniel2SH2D]

So peculiar...it's intermittent! I just rendered and it all looked like it worked, moved the camera to make sure the feet were good, and the problem is back.

Why would moving the camera affect the material that way?!