This is an assembly composed of three layers, although only two are in the attached preview. The layers are very high aspect ratio in terms of xy vs z: the x & y dims are about 250 times greater than the thickness.
Whenever I make one of the layers any degree of translucent/transparent, I get these artifacts. To me, they look at lot like large triangles from a tessellated part and in other views which I can't post, they really do seem to line up with exactly that. If the components are opaque, there is zero evidence of the artifacting.
How can I resolve this? I already have the sliders on the SW parts at the left edge of the red zone.