Is it possible to target individual elements (tracks) of an object with post process materials?

Hi all,
First time posting here so apologies if this isn’t in the appropriate spot. My question is as stated in the title; I’m working with alembic geometry caches of character animation that is comprised of several different meshes. I keep the tracks un-flattened when importing, and this allows me to apply all the shader materials individually to each mesh (element).

Now I’m looking to handle the post processing in a similar way, by either targeting the individual materials, or specific elements/tracks/meshes of an object to apply some specific post processing effects to them. For example, I’m using a faux fur type material with displacement/tesselation on the body of the character, and would like to just softly blur the material of the mesh without affecting the rest of the object.

I’ve done tons of searching and have learned how to use stencils to relegate post processing effects at an object level, but not by the tracks it’s comprised of. Is this doable at all without intensive scripting? I’m fairly new to unreal so any material to help steer me in the right direction would be super helpful!

Thanks!