Of course! Nothing makes me happier than passing on knowledge!
@Luoshuang and @KVogler So I actually went and did a test to see how significant the building time increase was between using the default INI settings and then bAllowIrradianceCaching set to false and built one of me environments using both settings. Both used the “High” Lightmass preset. (Just because my “Production” settings are heavily modified to produce highest quality but also significantly extended build times.)
For the default INI the build took 4 hours and 17 minutes
The modified INI build took 5 hours 26 minutes.
Of course this was performed on a custom indoor environment without either a directional or skylight present. So significantly less calculation was needed as opposed to a large outdoor landscape. But I plan on testing an 8km^2 landscape tomorrow afternoon and take note of the differences.
But, at least as far as this first test has gone, I honestly feel that changing the setting to “false” is absolutely worth it. The quality improvement is staggering in my opinion, especially if you’re intentionally disabling dynamic shadows for static objects. I’m not currently near my system so I can’t post screenshots yet, but I will in the next few days to show how much visual improvement is gained.
Of course, having a laptop to be able to do work on is favorable when the other is building building lighting for hours.