What's the difference between custom collision in import collisions and Import Collisions According to Mesh Name

Maybe some confusing phrasing, custom collision and collision according to mesh name are the same.

You have 3 options:

  • If you do not tick the Import Collisions: no collisions will be imported or generated
  • If you tick import Collision but not Import Collisions According to Mesh Name then UE generates collision for all your meshes based on fallback collision type
  • If you tick both import Collision and Import Collisions According to Mesh Name then UE will use the UBX_ UCP_ USP_ UCX_ as collision meshes for corresponding meshes. For meshes that do not have a corresponding custom collision then UE generates collision based on fallback collision type
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