Advanced options > World Generator > Distance Generator ModeHow complicated the generation should be when generating chunks outside the vanilla render distanceit can be set to :
Pre-Existing Chunks onlySurfaceFeaturesFull - Save ChunksSurface mode, it will stop before generating the features, in Full it will actually finish the chunks and save them, etc...Full), is the partial result used to generate the chunks when they get in vanilla render distance or is everything recomputed from the beginning ?