Metaplanets Creator 1.2.1 for Unreal Engine has been released!
Fixes:
Biome Output not refreshing at runtime after pins are edited
Spawner system regressions from 1.2.0, grass systems have been overhauled for high performance ground scatter
Many performance improvements throughout the plugin.
Additions:
Procedural texturing of cliffs and slopes included in the content examples (M_BiomePlanet).