I too seem to be having good results with nanite and vast amounts of grass. I couldn’t make vast-expanses with billboards and have it still cast accurate shadows at a distance, or just the sheer-number and reach of being able to have a mesh vs a square.
I have an old machine, 10y/o proc + 4060 RTX w8gig, 60fps is good results for me at 2k res with dynamic everything + fog and atmospheric effects (UDS). This is also 554, 56 borks the landscape so I cannot reliably test..
There’s another Quinn mesh in that 2nd pic, but good luck finding it, it’s faaaar away and still not as far as the grass goes..