P:(Masking) Add auto update recompute to subject /sky masking after copy/paste

It shouldn't be very hard to implement since you can already do this exact task in Photoshop. Actually it's even better than the suggested idea.. PS can batch select subject locally OR process it through the cloud for "finer details". I haven't tested to see just how much finer the details are though. 

Bring it on! I would walk away for 30 minutes to allow it to work rather than manually recalculating.

Setting status to Planned

I am a wedding photographer and I definitely need this feature... but only using an on-demand setting and not automatically after pasting masks. Rikk, I totally understand your question about it taking 20-30 mins, but it takes me (at least) double or tripple if I select each individual photo and click the udpate button. 🙂 Having the feature on-demand will also allow you to give a warning about the time it will take to re-calculate.

Adding this option to be toggled on/off, adding a warning pop up as well as cancel/continue buttons are all great ideas. BUT having the feature is essential. Manually clicking the recompute each time on a series of wedding photos or portraits has to take more time than it automatically doing it. Especially for those of us who recently upgraded to maxed out M1 Max machines.

This should be 100% essential. Man this would save my life and time drastically.... 

That is a future that will save some time in the workflow. Of course, there will be considerable computing involved. It will take time for the computer to recognise the subject/sky in every image, but selecting each image and clicking on every AI mask to Re-Compute is not any faster. Automating this great AI feature is the answer. I suggest adding an Estimate Time warning pop-up with Cancel and Continue buttons, so the new Lightroom users don't get stuck for half an hour on their unresponsive laptops.

As suggestions are wanted: Why do not do the batch computing in the background / on image change (if recalculation is needed).

Maybe ask if we want to calculate for every picture.... Or at least give us a similar option like for 1:1 previews (build / disacard) --> I guess masking might get better in future version so a discard might be necessary in the long run as well - However "Update / Recalculate" might be sufficient

Regarding the computer resources, I've been advocating for quite some time for a Resource Manager similar the one found in Final Cut Pro X. In that editor, background renderings happen when the user has either switched away from the app or when they have left the computer. The moment the mouse moves across the UI, the Manager halts all background work and gives the user full CPU bandwith for more editing. The time it takes between the user stopping and the background processing to begin is set in the Preferences. 

Within LR Classic, the Resource Manager would be very similar. I'd autosync mask settings to many files and the settings would copy over but the mask updating would be queed into the background. When I go get coffee, LR goes full throttle working on the masking updates.  This resource manager would be global and also apply to queued up exports, 1:1 renderings, etc. LR would pause the queue while I'm working and chew on the queue when I am away from desk or have switched apps away from LR to read emails or web browsing. 

It's fascinating how this only just introduced feature has become so indispensable so quickly that it needs a batch feature immediately. The new masking is incredible indeed.