With Normal Maps it’s really important, but with cavity maps, it is just something I do, but I don’t think it is actually necessary…just something I do, because someone once told me to set all maps, apart from the Color (/Albedo) to Non Color, just to be sure…but I haven’t found any proof, that he actually knew what he was talking about 😉 It makes a difference, but you don’t mess anything up, like with the Normal Maps as far as I can tell.
