Although this is actually an inherent issue with the method of construction, the more accurate solution is to reduce the shading rate to something lower and not render backfacing polys. Also, be sure that your maximum texture resolution is properly set for the scene, and your pixel samples are high enough.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)