Lightroom becomes unresponsive when scrolling/navigating thumbnails in any view.

[Chunk887]

Version: 5.2 20220128-1049-86119e0

CPU: I7-8700K

GPU: GeForce GTX 1080TI

OS: Windows 10 Pro 10.0.19043

For many months now (it may be over a year at this point) I've had problems running the Windows application for lightroom CC. At one point it worked excellently, I was able to rapidly workthrough fresh imports, now it's impossible to get through any bulk amount of photos due to all the freezes.

When scrolling through photos in any of the thumbnail views (Square, Photo, or Filmstrip) the application becomes unresponsive for 30 seconds to a minute and one of my CPU cores will be at 100% for the duration. Basically any action that will require the application to display additional/different thumbnails results in a temporarily unresponsive application, this includes resizing the window itself in any multi-photo view.

I have no issues while actually editing photos, provided I don't accidentially navigate the filmstrip while doing so.

I've tried turning on/off the setting for storing a copy of smart previews, no difference.

I've tried many of the suggested troubleshooting related to performance issues for lightroom, but what adds to the frustration is many of these articles (by Adobe and elsewhere) are targeted to Lightroom Classic, not the cloud application, and many of the steps are not applicable or menu options do not exist.

I have tried using the application with GPU acceleration on and off, there is no difference.

The application works fine on my relatively lower powered laptop with no problems (other than lower performance which can be attributed to it being a less powerful machine)

[Chunk887]

I spent some time on this today, I tried following directions here to do an uninstall/reinstall, and clear preferences. Issues remained.

I've set my photo cache size to 0% and then up again in an attempt to clear the cache, Same Issues.

I tried scrolling/navigating while at 0% as well just to see if any change, still nothing.

While it was set at 0% attempting to navigate forward through my photos, LR would struggle while fetching thumbnails (increased disk/cpu activity while unresponsive).

While navigating back to photos it's already fetched there's no delay, LR flys through them no hangs. At one point though the entire grid view went blank, the program became unresponsive for 30-60 seconds and subsequently all the previews began appearing one at a time. Once the program became responsive again I returned the photo cache back to 25%.

I've then tried clearing/downloading the entire cache via manually deleting the folder in appdata, after starting the program again it was entirely empty as intended, it immediately went unresponsive, but clearly fetching cache data, for the entire period it was unresponsive the appdata folder was growing again to it's maximum size, and there was ongoing disk/network/cpu activity.

The cloud icon within the application indicated the sync was complete but disk/network/cpu activity remained, during this time LR was writing to the Proxies and Previews Folder, and less frequently the managed catalogue files in the appdata locaiton.

I left LR open until all system activity stopped.

Same issue remains, as soon as I start navigating through photos the program becomes unresponsive while fetching more thumbnails. While the program is unresponsive after scrolling I notice that disk activity is generally writing to the previews folder in appdata, once it's become responsive most of the activity is to the proxies folder.

The next time I have energy for this I'll try changing the proxies location per this post, just as an attempt to rule out any issues with the SSD appdata is on.

Ran out of patience for this today, added disk details to OP. 

[Chunk887]

Disk details as I couldn't edit:
Samsung SSD 850 EVO 500GB

[Chunk887]

I spent the last couple days waiting for LR to complete a sync of my library to a fresh location on one of my drives.
It's all but done now except for a couple of videos that it refuses to finish downloading, there's been ongoing network activity but it seems like nothing is writing to the disk.

I'm beginning to wonder if these three videos are the source of some of the issues?

The performance issues remain. As I type this the thumbail view and application in general is flickering into a unresponsive, completely blank screen, occasionally displaying one photo in the grid. Screenshot attached. The selected file in the screenshot is one of the problem non-syncing videos.

I'll leave lightroom overnight and hope the last three finish.

[Rikk Flohr: Photography]

This scrolling/thumbnails problem feels like a video card issue. 

Recommendations:

1.  Update nVidia drivers to latest version with a clean install of the drivers
2.  Reset Preferences
3.  Perform a clean reinstall

This procedure works for both Lightroom Classic and Lightroom Desktop.

If you are using Lightroom Desktop it can change the location of your local storage. Please review this setting after resetting preferences. 

Reset Procedure:

1. Close Lightroom.

2. Hold down [Alt/Opt]+[Shift] while restarting Lightroom.

3. Overwrite the Preferences when prompted by the dialog.

4. Close Lightroom.

5. Restart Lightroom.

 Lightroom Install Procedure

1. Close Lightroom
2. Restart the computer
3. Use the Adobe Creative Cloud App to uninstall Lightroom
4. Restart the computer
5. Install Lightroom via the Creative Cloud App without launching any other programs.
6. Restart the computer
7. Launch Lightroom
8. Wait 5 minutes
9.  

[Chunk887]

Thanks Rikk but I've already done a complete reinstall and preference reset.

I've also reinstalled my driver's multiple times in the period I've had this issue.

Still don't have a solution.

[Chunk887]

I've done another complete graphics driver reinstall, I used DDU prior to installing the latest studio driver version (511.65) from Nvidia, that didn't solve it.

I tried installing the latest firmware for my motherboard (Z370-5), still no improvement.

I feel like the next appropriate step is reinstall of windows, but I'm not very eager to do that. Would love other options to consider.

[Rikk Flohr: Photography]

Mouse/Tablet/Pointing Device would be the next place to check.  Can you verify those are up-to-date?

[Chunk887]

It's not my mouse. Yes it's up to date. If it was my mouse, I think there would be some real question to why I have to go through this much agony for this one application despite every other application having zero issue whatsoever with my mouse.

I've found another reference to an identical issue (You worked on it), and come to think of it I recall had similar behaviour in LRc years ago. It even was repeated on multiple of his devices.
https://feedback-readonly.photoshop.com/conversations/lightroom-classic/lightroom-classic-9x-slow-br...

I've found other references to the same issue on reddit recently.

To add more detail I've found if I work within a specfic month or date once the photos have all loaded into the grid view it's fine, but I don't have the ability to group photos and some other behaviours in those views.

The problem is mainly in All Photos, or any set of photos. It could be 30, it could be 100. Lightroom will sit and load individual thumbnails in one at a time, the CPU sits chugging away slowly filling in the grid, and then once it's complete for the whole set the program will operate lightning quick, but only within that set of photos. As soon as I go to another view I get to watch the whole thing happen all over again.

[Rikk Flohr: Photography]

The thread you reference is years old and references a completely different software package (LrClassic 9.x). It is very doubtful this is the same problem as Lightroom Desktop and Lightroom Classic do not use the same scrolling code. 

From your earlier post: " I've also reinstalled my driver's multiple times in the period I've had this issue." 

That may be, but did you use exactly the procedure I described above step-by step?

[Chunk887]

Yes... I already said as much. I've done a complete uninstall reinstall and update of everything short of windows itself.

[Rikk Flohr: Photography]

Apologies: I meant to quote: "Thanks Rikk but I've already done a complete reinstall" Did you follow my reinstall instructions exactly?

[Chunk887]

Yes.

[Rikk Flohr: Photography]

Is it possible for you to record a video of the issue and post it here for me to review?

[Chunk887]

I had to wait for 3-5 minutes from when lightroom opened for the application to be responsive enough to allow me to select a filtered view. Video starts immediately after I selected the filtered set.

The photo set finishes loading at about 2:20 in the video and you can see the performance is perfectly fine afterwards.

I also tried editing photos within this set after it "loaded" with and without the filmstrip open and had few issues other than a couple of short hiccups.

Keep in mind a good portion of the CPU and GPU load seen here is OBS transcoding the recording, but this is identical to the problem when OBS isn't running.

This is also a small photo set, I'm basically unable to use the all photos view with any reasonable performance.

https://drive.google.com/file/d/1sDAoJx4W5jBHVQNZ1KHO07cEtelwvoFF/view?usp=sharing
I haven't had any luck getting this to play within chrome itself when in an incognito tab so ymmv whether or not it requires you to download this, but it's over the limit for this forum.

[Rikk Flohr: Photography]

Thank you for the video. Please leave it available as I am forwarding to the team for review. 

[Rikk Flohr: Photography]

A member of the engineering team has reviewed the video and is making a request:

Can you supply two diagnostic logs: One taken while the problem is occurring and one taken when the situation rights itself?

For LrDesktop

• Go to Preferences
• Account Section
• Hold down the [Opt/Alt] key to make [Diagnostic Log] button appear.

Additionally, the engineer would like to know how many albums you currently have - an estimate is sufficient. 

Thanks!

[Chunk887]

Both are here, I'm not entirely sure if the before version was captured during the problem as it's hard to get the preferences to open when lightroom is hung like that.

I have 8 albums.

[Rikk Flohr: Photography]

Thanks, I will forward this information to the engineer. Leave the logs in place for a few days. 

[Chunk887]

Hey Rikk, any updates on this?

[Chunk887]

Just checking in.

[Rikk Flohr: Photography]

Apologies - Are your files still available for download? A different developer needs to get them again. 

[Chunk887]

This link should work.

https://drive.google.com/drive/folders/1Gh1oKkIFxb8botfp4cxiGQzP7upjetN3?usp=sharing

[Rikk Flohr: Photography]

The engineer has asked for a complete copy or your Help>System Info… file contents. Can you package those up and send also please?

[Chunk887]

Attached here Rikk.