By checking “Hidden Shadow” and “Actor Hidden In Game” I can make a mesh cast shadow while not being rendered, however, I can’t access this feature because these:
Are not accessible when a mesh is placed using Grass Tool or Foliage Painter so I’m stuck.
But, if you can make it as simple as allowing the specified LOD i.e LOD 5 to cast shadow for other LODs instead of each LOD having it’s own shadow casting, that should significantly reduce the shadow cost while not making much visible difference.
If that actually come true, we’d be able to use it for pretty much everything i.e have our rock LOD 5 cast shadow for rock LOD 0, applying this technique would tremendously help with battling the ShadowDepths cost specially in outdoors where there are lots of rocks, trees, ground cover etc.
Thanks.