Thanks for pointing this out. Good info.
I also found this bit interesting:
"Due to changes in the way samples are generated, the Rays Per Evaluation and Secondary Bounce Rays in the Global Illumination panel are affected. This means in order to get similar results to previous versions of LightWave, you will need to increase these values, often doubling them. It won’t take any extra render time, but is needed to account for the differences in number of GI samples generated with the new system.
When the Use Gradient option is checked in the Global Illumination panel LightWave uses the old sampling method for Global Illumination only. When off then it uses the new sampling."
Not sure if this only applies to old scenes opened in 2018, or all scenes. If it is all scenes, it seems they could have set better defaults.
