This is something that’s bugging me as well. I’m not sure if it has something to do with being able to “compress texture without alpha” checkbox, but I’m missing a lot of info regarding this. Is picking pixel format in any way related to compression or not since we can pick even the compressed types. Does this mean uncompressed RGB and if so why should unreal allow only all of the 4 channels and using those also in “official” assets even though the alpha is not being used anywhere. The whole handling of textures is weird in some situations. Sometimes they update when you change something related to format, sometimes they don’t.