Enable background ray tracing pipeline creation, without blocking RHI or Render threadFallback opaque black material will be used for missing shaders meanwhile 0: off (default, rendering will always use correct requested material 1: on (non-blocking mode may sometimes use the fallback opaque black material
Usage
r.RayTracing.NonBlockingPipelineCreation [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.