I tested it myself at 1080p, and it seemed quite usable all things considered. Not perfect, but the game was legible and I had no issues with the scene.
Now that I would like to learn more about, because as far as I understand it, nanite almost always performs better with diffuse, opaque geo. Performance is non-trivial with WPO and anything similar, but that’s not a new issue. Besides, lumen effectively depends on geo for the surface cache to run as well as it is, as it’s constantly generating and regenerating mesh cards via nanite.