"r.MipMapLODBias" Only works on Sky ?

I am trying to make a setting Menu and i want to lower the Texture MipMapBias manually.
I use the “r.MipMapLODBias” console command which Seems to be only working on Sky and Light map.

when i use the command in game it Even lower the Texture mipmap in the texture editor but not in the Game.

is there separate Commands for Lightmap Mipmap and OtherTextures ?
cause i really don’t want to lower the Lightmap quality that much.

and how much it affects performance on low performace Devices?

“sg.texturequality” also don’t do anything.