Description

GenerateVisibileRayTracingMeshCommands Severely Reduces Foliage Performance Even if no RayTracing is Used.

Found in 4.23 CL# 8386587 and 4.24 CL# 8748719

Steps to Reproduce
  1. Open attached project
  2. Check the post process volume to ensure no RT features are enabled
  3. Move around in the viewport
  4. Enable "Stat scenerendering"

Result:
GenerateVisibileRayTracingMeshCommands severely reduces scene performance even if no Ray Tracing features are enabled

Expected:
GenerateVisibileRayTracingMeshCommands will affect performance only of Ray Tracing effects are used

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Fixed
ComponentUE - Graphics Features - Lumen
Affects Versions4.234.24
Target Fix4.24
Fix Commit9637455
Main Commit9763381
Release Commit9637455
CreatedSep 18, 2019
ResolvedOct 23, 2019
UpdatedSep 19, 2021
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