i am having this problem with some large lightmaps. I think it is related to mip. When i am closer lightmap seems to be smooth, but at some distance i get this kind of compression banding… any ideas? I have already built at top quality settings, lightmap resolution, is hight, compression is disabled.
i have disabled mip gen setting in the lightmap (lucky i found it), to no mip maps. and now it look ok.
Question: Is there a way to force all lightmaps to nomipmap?