I am testing GLB for Facebook. So far trying to go around limitation of 3 MB. ThreeJS export of GLB seems pretty strange with image. Let say I have OBJ and it is only 400 KB, then I start adding material and texture, a couple of texture, few of them is sourcing the same file. Suddenly my file become 9 MB. Eventhough I am sure the map has been converted to JPG.
Any idea why and if there is suggestion on file size?