r.MegaLights.Volume.TraceCompaction.ThreadGroupSize
VarUnreal Engine Var console variable.
rMegaLightsVolumeTraceCompactionThreadGroupSize
Description
Size of the volume trace compaction threadgroup. Larger group is slower to compact, but cam make tracing faster due to improved coherency. Values: 4, 8.
Usage
r.MegaLights.Volume.TraceCompaction.ThreadGroupSize [value]Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.

