@Sierra, maybe you can get around the shuffling by um .. “counter-shuffling” your base texture in a way that will make it appear unshuffled again? (Like when it has four 1-unit parts ABCD, which get displayed as CDBA on medium walls, make your medium texture a DCAB one?) -- apparently
doesn't happen when making a wall from scratch, so this would be unnecessary.
@SimGuruModSquad, thank you! The DiffuseUVScale was the last state of our guessing as well, good to know we were guessing in the right direction =P