P: Allow *all* long running tasks to process in the background

[Frank_Minjarez7960]

There is a fundamental programming issue with Lightroom. Many long running tasks block the user from editing pictures. 

Let me give a couple of examples:

1) Applying adaptive presets to a batch of photos blocks editing *any* pictures while it's being a applied

2) Importing a catalog prevents lightroom from being used for anything else

3) Using generative fill blocks any other work

As photographers we're often working on multiple projects/photos concurrently. Why is there an assumption by Lightroom engineering that the photographer can only work serially? If I'm applying an adaptive preset to 1000 photos why do I need to wait for that to finish before I can edit any other photos? 

It should be an imperative that the UI not be blocked by any task that can be done in the background. If specific photos can't be edited because there are pending changes that's fine (lock them out) but don't block us from working completely. 

Please let us fully utilize our computers and time.

[John R Ellis]

This misbehavior occurs when applying any preset (not just adaptive presets) or applying Reset. Prior to LR 13.0 (e.g. 12.5) LR worked correctly.

To reproduce on LR 14.0.1 / Mac OS 14.6.1:

1. In Library Grid view, select at least 2000 photos that are a mix of raws and non-raws.

2. Do Quick Develop > Saved Preset > Color > Natural.

3. Select a thumbnail and go to Develop. Observe that Develop doesn't display the selected photo until the progress bar shows the application of the preset in the previous step has completed. You may have to select a couple photos in Develop before you see the stall, and then all subsequent attempts to edit a photo in Develop stall.

4. Go to Library.

5. Click Quick Develop > Reset All. 

6. Select a thumbnail and go to Develop. Observe that Develop doesn't display the selected photo until the progress bar shows that applying Reset in the previous step has completed. You may have to go to a couple of photos in Develop before observing the stall.

[John R Ellis]

@Rikk Flohr: Photography, please consider moving to Bugs.