LOD group, problem with avatars

Hi, I’ve got a problem when trying to set up a character with LOD group. Problem is avatar isn’t changing so humanoid animation working only with one LOD level. Is Unity’s LOD system only replacing mesh renderers or it’s working on more stuff? I thought to change avatar with OnEnable function depends which LOD level is enabled but as far as I know it’s not disabling all objects so that’s won’t work. Or maybe I’m doing something wrong. For testing I’m using free character from asset store and animations from unity.

Also link for screenshots:
https://www.dropbox.com/sh/94a0k6omtocy49l/AAAB2IfkZA8_en_e1JJqguUta?dl=0

It looks like that model I posted isn’t prepared for humanoid awatar well enough, when I’m making character in blender with few poly, animation working because using only one avatar. So I need to be sure when gonna buy an character, I’ve upgraded last link in last post with a video.