Extremely slow export speed on Lightroom Classic

Report · Jan 30, 2024

Hello!
I recently chnaged my system and using Lightroom C 13.1 on a Mac Mini M2 pro chip. The export speed is wildly slow, specially for TIFFs. It takes minutes to export one TIFF or high res JPEG. Any solutions/recommendations are welcome and appreciated.

Please find syste, info below:-

Lightroom Classic version: 13.1 [ 202312111226-41a494e8 ]
License: Creative Cloud
Language setting: en-CA
Operating system: Mac OS 13
Version: 13.5.0 [22G74]
Application architecture: arm64
Logical processor count: 10
Processor speed: NA
SqLite Version: 3.36.0
Built-in memory: 16,384.0 MB
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 1,282.0 MB (7.8%)
Virtual memory used by Lightroom: 418,823.6 MB
Memory cache size: 226.1MB
Internal Camera Raw version: 16.1 [ 1728 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 3067MB / 8191MB (37%)
Camera Raw real memory: 3059MB / 16384MB (18%)
Standard Preview Size: 5120 pixels
Displays: 1) 5120x2880

Graphics Processor Info:
Metal: Apple M2 Pro
Init State: GPU for Export supported by default
User Preference: Auto

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/toniccreative/Pictures/Lightroom/Lightroom Catalog.lrcat
Settings Folder: /Users/toniccreative/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Flickr
4) Nikon Tether Plugin

Config.lua flags: None

Report · Jan 30, 2024

"It takes minutes to export one TIFF or high res JPEG."

As first troubleshooting steps, let's see if it's related to the graphics processor.

1. Restart the computer.

2. Set Preferences > Performance > Use Graphics Processor to Custom and uncheck Use GPU For Export. Any change?

3. Set Preferences > Performance > Use Graphics Processor to Off. Any change?

4. You're on Mac OS 13.5, while the latest version is 14.3. LR is very sensitive to bugs in graphics drivers, of which there are many, even on Mac. The only way to get updated graphics drivers is by updating Mac OS.