So, I found something maybe. I think the main thing of that great Aaron's Westwood works is vertex displacement or voxel displacement. It works in a different way from 2.5D displacement or 3D displacement, what I understood. Maybe I'm wrong, but Corona team, please, check Octane's render displacements. Maybe it will be useful for all of us. In any case, check all this topic for displacement bug, it is real of Real World Units in setup menu. And also check the tessellation when using few displacements in Layered Mtl.