For Oppy, generation is progressed through multiple passes [Noise > Terrain > Detail Objects > Terrain Details > Water > Color]. So it is possible to generate elements separately and optimize generation time vastly. Currently, we are able to achieve 130-140 fps in the editor for a 1000x1000 terrain [with a 65x65 detail & color map and 256x256 heightmap & thousands of detail objects] generation time of 1-2 seconds with whole generation passes. #unity3d #gamedev #gamedesign