World Partition not generating all regions?

As you can see, only 4 regions are generated, the others not.

My map is 12241px * 12241px, it has 576 components, the grid size I used was 2 (2x2=4 components), and the region size is 16.

Why is it not generating? I cannot load the proxies that are not in a region.

edit: it looks like this. It’s like the components that are not inside regions are flat at Z=100 (original Z value for the landscape transform when importing heightmap).

edit2: it seems that using 1x1 sections per component works well, it’s when using 2x2 that it doesn’t. Do you know any way to use 2x2 sections per component? I would prefer that since 1x1 makes my components go over 2000, while with 2x2 is only 576. So now I have a lot more draw calls.

Sorry for the bump but does someone know how this works?