Wait for completion of parallel render thread tasks at the end of each shadow pass. A more granular version of r.RHICmdFlushRenderThreadTasks. If either r.RHICmdFlushRenderThreadTasks or r.RHICmdFlushRenderThreadTasksShadowPass is > 0 we will flush.
Usage
r.RHICmdFlushRenderThreadTasksShadowPass [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.
