UE5 Big Landscape, World Partition, Landmass Plugin, Water Plugin

In some ways that makes sense, but I also reduced sand to 2K textures if referring to material. Also, should that issue be lessened when using world partition? Only loading a few squares does seem to help in most cases but the landmass editing for water is ridiculously slow even on smaller landscapes. I am referring to the editing of it. Usually it will load after drawing but the manipulation of the splines is where it just tanks!