UI textures still become blurry despite mip maps being disabled.

The texture is usually clear as it is used in UI and has 0 depth in the scene but we would like to use `QualitySettings.masterTextureLimit = 1` to reduce texture size on low end devices but it is causing a few UI textures with no mip maps to become blurry. According to the docs, this setting should not affect textures with no mip maps so they must be being added at some step after the texture import. Nobody knows where this is coming from but we have a fairly large team so we are probably missing something.

Does anybody know any steps where mip maps might be being added to these textures?

 

The only thing I can think of is if you're importing them as sprites and then adding them to a sprite atlas group, and that atlas has mip maps.