I haven’t really looked into this at all yet and it’s not something I’m planning on getting integrated for the first release. However, it’s definitely something I want to look at the feasibility of. I haven’t really stress-tested Cubiquity yet to see how large a terrain we could get in one volume. We do have some plans in Cubiquity for paging terrain on this scale and to be able to integrate this into UE4’s level streaming would be great.