This UE5 project is a free bonus of my 3D Scanned Photorealistic Woods & Rocks, intended for lower PC specs. The ultra high version has 245M Nanite triangles. Check out here: https://andersonrohr.gumroad.com/l/scans
In this project version I tested 6 meshes (300k each) total of 1.8M nanite triangles on a GTX 1050 Ti 4 GB, 16 GB RAM, i7-3770 CPU 3.40 GHz.
Scalability: High
30 FPS at the most part of the cinematic sequence.