Decal component on a geometrycache BP actor projecting all around

is it geometry cache still experimental?
I am trying to apply a Decal on a single animated face of a low poly mesh (geometry cache).
I create a blueprint with that single face, and place a DECAL COMPONENT. IT works greate in the blueprint viewport.

Add that to the scene. The decal now is projecting on every other actor sharing the edges of that face. Is it possible to solve in UE5.3? I have seen many people complainging about decal limitations as they want to apply decal to a single object, or specific materials.

All objects (also geometry cache type) are set not to receive decals - if it matters.