UE 5 Multiple Virtual Heightfield Meshes (VHM) support?

Hi. I tried adding multiple heightfield meshes (one for landscape one for water) since tessellation is no longer supported. And it flickers between each heightfield mesh every frame at certain angles. One disappears and the other appears every frame.
Is it even possible to have more than one heightfield mesh? Thanks for any tips!

Still struggling with this issue, have anyone ever succeeded with multiple heightfield meshes in one level?