I'm now using AI Masks (especially the SUBJECT mask) a *ton*... they are great! In particular, I'm using these for sports photography where I'm shooting lots of bursts in the sun .. and need to dim the bakcground while making the subject brighter.
When you use these a ton, it's very expensive for the AI to have to re-evaluate the edges of the mask ... it takes time and battery ... but there's lots of situations where you want to adjust the brightness/white-balance of the subject and then copy/paste it to a whole bunch of other photos... without needing to re-evaluate the mask edges.
THE IDEA: on copy/paste of develop settings, separate the mask edges from the mask settings, like this:
[x] Masking
[x] Mask 1 - settings (brightness, etc.)
[ ] Mask 1 - update AI-derived edges
[x] Mask 2 (blue sky) - settings (brightness, etc.)
[ ] Mask 2 (blue sky) - update AI-derived edges
With the options as above, I could adjust the brightness/contrast of hte first image in a burst and then just paste the change *without waiting for the AI to re-evaluate the mask edges*. Much faster!