Extremely slow Lightroom 14.2 om Mac m1

Forum|Forum|11 months ago
April 9, 2025
2 replies
387 views

Hi there, anybody experienced slow-loading thumbnails in a library section? I use a Mac mini m1 with 16GB RAM. Before lightroom ran smoothly, but after the last update it became extremely slow. I made smart previews for all the images and still in the library view the thumbnails are not loading fast. Another issue is that I get an error window every time when I close LR.

macOS

johnrellis

Legend

The slow thumbnails might be due to corrupted previews. Rebuild them following these instructions:

https://helpx.adobe.com/lightroom-classic/kb/lightroom-gives-error-preview-cache.html

If that doesn't help, do the LR menu command Help > System Info and copy/paste the entire contents here so we can see exactly which versions of hardware and software LR thinks you're running and important LR options that are set.

S

Simon PaskeAuthor

Participant

I tried to do everything under the instructions, but unfortunately didn't help. I reinstalled Mac OS, Lightroom, still the same

Here is the System info from LR -->

Lightroom Classic version: 14.3.1 [ 202505061331-b063faef ]
License: Creative Cloud
Language setting: en-DK
Operating system: Mac OS 15
Version: 15.4.1 [24E263]
Application architecture: arm64
Logical processor count: 8
Processor speed: NA
SqLite Version: 3.36.0
Built-in memory: 16.384,0 MB
Dedicated GPU memory used by Lightroom: 390,5MB / 10.922,6MB (3%)
Real memory available to Lightroom: 16.384,0 MB
Real memory used by Lightroom: 5.976,3 MB (36,4%)
Virtual memory used by Lightroom: 420.435,7 MB
Memory cache size: 1.774,4MB
Internal Camera Raw version: 17.3.1 [ 2227 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 2303MB / 8191MB (28%)
Camera Raw real memory: 2447MB / 16384MB (14%)

Cache1:
NT- RAM:0,0MB, VRAM:0,0MB, Combined:0,0MB

Cache2:
m:1.774,4MB, n:0,0MB

U-main: 375,0MB

Standard Preview Size: 3840 pixels
Displays: 1) 3840x2160, 2) 1920x1200

Graphics Processor Info:
Metal: Apple M1
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: OFF

Application folder: /Volumes/Extra/Lightroom/Adobe Lightroom Classic
Library Path: /Users/simonpaske/Documents/Adobe/LR 2025 Catalog/Lightroom Catalog-2025.lrcat
Settings Folder: /Users/simonpaske/Library/Application Support/Adobe/Lightroom

Installed Plugins:

Config.lua flags:

johnrellis

Legend

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That crash report confirms there's a serious problem with your computer or LR configuration. When it happens again, be sure to enter the email address associated with your Adobe Id so Adobe can link the crash report back to this thread:

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