Update. I was wrong.
Try using load asset many times in a standalone game, and then use ‘memreport -full’.
Only assets that get assigned to something or actually used will take space.
I have a system where I swap sky textures as I move around the game. I always have 2 in use, because I need to be able to lerp between them.
EDIT: Only the two textures I’m using are loaded. ( I had a default texture in the material instance, which I removed ).