well it's a big difference between 4km+ terrain and 500m. It's worth messing around with at least briefly to see if its not the right fit for your own needs.
streaming and virtual textures, while very nice are not relevant to this issue The spline system seems to work fine on my large nanite landscape (10x15km) and while it's a little clunky I can't say I'm having any major problems with it. I'm not building anything as dense as New York though. Your biggest problem with…