How to render millions of polygons with Hierarchical Instanced Static Mesh in Unreal Engine 4.
Get project files: https://techartaid.com/products/

Optimize draw calls, reduce CPU overhead, avoid common mistakes in Construction Blueprint and have fun creating a massive asteroid belt.

Cool usage of foliage tool for asteroids, by Illusion Ray: https://www.youtube.com/watch?v=NNiaBbW5ml8
Draw calls explained: https://simonschreibt.de/gat/renderhell-book3/

Thanks to the early reviewer Mikołaj Fabjański and to reddit users Creep and junkmail90210 for ideas.