Should work at 6 FPS even on iPhone 5C, but if you are on a RTX 2080 Ti try http://emh.lart.no/publish/csb/csb3d/v1/?dupCount=1000&swarm... for 20k units, or more if you're adventurous. I'm getting 100 FPS on that. It's using instanced meshes. I'm getting 6 FPS on a million units (dupCount=1000&swarmCount=500) with ownPhysics=true, which speeds it up with simpler physics for large unit counts.