Version 14.4 very slow

[defaultfs4vundmg9cg]

Since 14.4 all LrC functions have been very slow . In using a simple brush the display of the intended change lags significantly. Generative Removal tool generated error message and I receive frequent error messages that product is still trying to write changes to metadata in XMP. Collectively it is making it very difficult to get any work done. It is not a resource problem with my machine: Apple Studio M2 Max with 64GB memory and running OS15.5. These reported problems did not exist before release of LrC 14.4. Any known remedies?

 

 

[Ian Lyons]

If you have Automatically write metadata changes itno XMP, then try turning it off

Additionally, please provide a copy of your System Info. You can obtain same from the LrC Help > System Info menu item. Use the Copy button at top right corner of the dialog to capture the info, then paste into your reply.

[Claire H.]

Hi @defaultfs4vundmg9cg, Welcome to the Lightroom Classic forums! Let's try a few things to fix this issue:

1. Brush Tool Lag: Disable Auto Mask. Enable "Use Smart Previews instead of Originals" in Preferences > Performance.

2. Reset Lightroom Preferences: Please take a look at this Helpx article for steps. https://adobe.ly/3HsQXpA It is recommended that you back up your catalog before resetting preferences. You can take a look at this article for more information:  https://adobe.ly/4dW8vqF.

3. Check Performance: Turn off GPU acceleration in Preferences > Performance. OptCatalogour catalog (File Catalogize Catalog). Clear Camera Raw and Develop caches.

If the issues persist, let us know, and we can try a few other things. As @Ian Lyons recommended, please send along your System Info. Thanks! ^CH

[defaultfs4vundmg9cg]

Here is the requested system info. I appreciate the info you supplied but keep in mind nothing has changed on my system since installation of 14.4 and LrC worked just fine, with no issues, prior to this install.

Lightroom Classic version: 14.4 [ 202506051112-5918896a ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 15
Version: 15.5.0 [24F74]
Application architecture: arm64
Logical processor count: 12
Processor speed: NA
SqLite Version: 3.36.0
Built-in memory: 65,536.0 MB
Dedicated GPU memory used by Lightroom: 1,362.1MB / 49,152.0MB (2%)
Real memory available to Lightroom: 65,536.0 MB
Real memory used by Lightroom: 3,439.0 MB (5.2%)
Virtual memory used by Lightroom: 415,361.6 MB
Memory cache size: 66.7MB
Internal Camera Raw version: 17.4 [ 2272 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 4MB / 32767MB (0%)
Camera Raw real memory: 26MB / 65536MB (0%)

Cache1:
NT- RAM:0.0MB, VRAM:0.0MB, Combined:0.0MB

Cache2:
m:66.7MB, n:0.0MB

U-main: 83.0MB

Standard Preview Size: 5120 pixels
Displays: 1) 5120x2880

Graphics Processor Info:
Metal: Apple M2 Max
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: ON

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/douglasdortenzio/Pictures/Lightroom/Lightroom Catalog-v13-3.lrcat
Settings Folder: /Users/douglasdortenzio/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Flickr
4) ON1 Effects 2023
5) Topaz Photo AI

Config.lua flags:

[Aleke]

Hi @defaultfs4vundmg9cg, thanks for sharing the System Info!

In addition to the great suggestions Claire and Ian mentioned, I’d also recommend checking whether your third-party plugins are fully up to date. Sometimes outdated plugins can cause issues with the latest versions of Lightroom Classic.

You can head to File > Plugin Manager to temporarily disable them, then restart the app and see if that improves performance.

Appreciate your help with this!
Alek