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Hierarchical Instanced Static Mesh Component not working when too small poly count in Mesh

  1. Upload my Static Meshes, Set Lod Number = 2 in FBX Import Options(see link below)

  2. Create a Empty map

  3. Create a simple actor with HierarchicalInstancedStaticMesh Component

  4. Set Static Mesh of HierarchicalInstancedStaticMesh Component(see link below)

  5. Add 2 instances(maybe more)

  6. Move them manually in different directions

  7. Place the Actor in the game and turn on Mesh LODs in View Mode

  8. Try to Replace Static Mesh and move the Camera

  9. LODs not work on the lowpoly model(around 2000 poly and below) and work on hipoly(8000 poly +)

This Meshes almost copy each other, just 1 additional subdivision in Blender - It's all the difference.

Test Meshes

Product Version: UE 4.20
test-meshes.zip (92.4 kB)
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asked Sep 16 '18 at 05:42 PM in Bug Reports

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avatar image Jeff A ♦♦ STAFF Sep 17 '18 at 02:45 PM


We've recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.



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