ue4 archviz lighting training - bounce card method

modelled 3dsmax, except chair( referenced kooola's scene )    • UE4 Archviz / Lighting   materials etc.. https://www.unrealengine.com/marketpl... Lightmass.ini setting: NumHemisphereSamples=256 World settings: static lighting level scale : 0.01 num indirect lighting bounces : 40 indirect lighting quality :6 indirect lighting smoothness : 1.1 Lightmass build time : 45 min. :/ added matinee for testing scene. Spec : core i7 5820 gtx 970 16 gb ddr4 any advice to reduce building time and to increase quality?