Actor Merging 'Use Landscape Culling' not working

[Jamp-3D]

“Enable Use Landscape for Culling Invisible HLODVertices on the Landscape(s). This option is found under the Hierarchical LOD section of the Landscape.
Note: both the Merge Actors and Hierarchical LOD systems require this when using their Landscape culling option.” - JoeRadak

Remove Unnecessary Geometry When Using MergeActors or HLODs With Landscapes

Remove Unnecessary Geometry When Using MergeActors or HLODs With Landscapes Article written by Ryan B. There’s a useful option, Use Landscape Culling, that removes unnecessary geometry hidden beneath a Landscape when generating a combined mesh from either the Merge Actors or Hierarchical LOD systems (HLODs). Additionally, Use Landscape for Culling Invisible HLODVertices must also be enabled on the Landscape(s) in order to work. Steps Enable Use Landscape for Culling Invisible HLODVertices o…