>>370815694
assuming you have minimized your material count and compressed your textures as well
delete unnecessary verts eg
>skin under clothes
>clothes under clothes
>feet in shoes
>detail inside props (yes people make this)
unless you have it as a toggle
anything else like decimating meshes would be lossy
or you can cheat vrc's retarded system by making meshes into particles
you should approach optimisation with the intention to optimise not just get a better status from vrc because they arent the same thing
you can very easily make a terrible avatar that is 'good' according to vrc and a fine avatar that vrc calls 'medium' or even 'poor'