@Jinkel : Yes this is a limitation of geometry collection
However Geometry Collections support Nanite ( which provide continuous automatic LOD )
If your project can afford using Nanite , I’d recommend using it
We have workflows that can allow using Instance Static Meshes for rendering the fragments but it’s quite a lot of manual setup at the moment and we haven’t yet provided any documentation for that
It involve using the more general custom renderer and exporting the fragments as mesh and then recreating the geometry collection from those meshes