You could try to lessen the extreme of your settings. Try to set Static Lighting Level from 0.1 to maybe 0.5 and so on. It’s about balancing it. - Sure you can spend 2 days building lighting for a little change but you need to make a judgement call if it’s really worth. It gets exponential. For the last 0.1% of quality the build time will double or quadruple probably.