they are experimental features, they improve the accuracy of color reproduction (in a filmic sense).
the adaptation window should stay on
the adaptation surface buys you some residual accuracy but at the cost of cooler skin tone rendering, so i would leave it off for now. possibly switch it on for landscape or non-portrait
they are optimized per stock and they are very experimental, they might vanish if a better solution for the up-sampling will be found (stay updated with the spektrafilm tech discussions thread)
(it is part of the experimental and artisanal part of profile generation)