problem is back on source master 4.15 (versus 4.14). In KiteDemo/GDC_Landscape_01/Forest_and_Lake all foliage instances of HillTree_Tall_02 are stuck at LOD3. Activating HLOD for a copy of map has no effect. Only setting LOD3 Screen size to 0 brings back detail, but performance hit and rendered LOD order all messed up. single instances are fine. Same tree’s LODs are fine in 4.14.