There’s also Map Magic a node based procedural terrain generator in the asset store works similarly to World Machine. You can tweak the resolution to get the triangle count down. When I’m messing around with terrain for VR I use this PolyWorld asset to make the terrain a facetted low poly model. There are other assets such as Flat Mesh Generator that do the same, but I haven’t used them. There’s also Gaia if you just want to use a stamp based approach to procedural terrain gen.