I've found this field works like intended if I modify the texture importer meta file. This field wasn't exposed in c# until 2022 as it was marked internal in prior versions. Any caveats to modifying the meta file directly with this field? Again it does seem to work like expected, IE certain high res textures I don't want to be affected by the global texture quality settings. Not quite ready to go past 2021 on my project yet.