Participant

Question

Slow performance Lightroom Classic Apple M1

Forum|Forum|1 year ago
October 29, 2024
3 replies
5900 views

Can anyone take a look at these settings and let me know if my machine is the ptoblem with this new version or something else? Its been so slow lately its unbearable. TY

Lightroom Classic version: 14.0.1 [ 202410161356-30922cfc ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 14
Version: 14.4.1 [23E224]
Application architecture: arm64
Logical processor count: 8
Processor speed: NA
SqLite Version: 3.36.0
Built-in memory: 8,192.0 MB
Dedicated GPU memory used by Lightroom: 83.4MB / 5,461.3MB (1%)
Real memory available to Lightroom: 8,192.0 MB
Real memory used by Lightroom: 933.3 MB (11.3%)
Virtual memory used by Lightroom: 411,806.7 MB
Memory cache size: 72.6MB
Internal Camera Raw version: 17.0 [ 2043 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 1MB / 4095MB (0%)
Camera Raw real memory: 3MB / 8192MB (0%)

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

Cache2:
m:72.6MB, n:0.0MB

U-main: 87.0MB

Standard Preview Size: 1440 pixels
Displays: 1) 2560x1440

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

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/Master 2024 updated .lrcat
Settings Folder: /Users/macmini/Library/Application Support/Adobe/Lightroom

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

Config.lua flags:

macOS

J

Jao vdL

Community Expert

How large is your main SSD and how much free space does it have? If it is only 256 GB and you have your catalog, previews and images on it, then that is a major problem and will slow down your machine tremendously if it gets close to being full. In that case (a too small internal SSD), often the only solution is to store the catalog on an external SSD drive. Also as already said, the 8GB can be a problem. Lastly, your preview size is set too small for your display. If you are browsing through images in the library module in fill view, it will force Lightroom to recreate a preview every image you go to. You should set the preview size on the catalog to "auto" which will select 2560 as the standard preview size.

A

AnnapPhotogAuthor

Participant

I've been importing from and exporting to my NAS for a few years on this machine with issue. The point about pitching smart previews may be a good one for me to try. I do have a large catalog which is stored in an external hard drive. I'll change the preview size too and see what happens. Appreciate everyone's input.

A

AnnapPhotogAuthor

Participant

I meant importing and exporting on this machine with no issue.

dj_paige

Legend

Can anyone take a look at these settings and let me know if my machine is the ptoblem with this new version or something else? Its been so slow lately its unbearable. TY

By @AnnapPhotog

What actions in LrC are slow? Please be specific and detailed.

A

AnnapPhotogAuthor

Participant

Importing and exporting mostly takes more time than I've ever seen. Not sure if its the new version or if something is stalling my machine.

KR Seals

Community Expert

What are you using for Importing? Card reader? Cable connection direct to camera?

What is your export destination? External drive?

I am asking, because it's possible the connection speed is reduced for some reason.

Also, what is the Library Path: /Volumes/Master 2024? Is that on your internal drive?

Ken Seals - Nikon Z 9, Z 8, 14mm-800mm. Computer Win 11 Pro, I7-14700K, 64GB, RTX3070TI. Travel machine: 2021 MacBook Pro M1 MAX 64GB. All Adobe apps.

Conrad_C

Community Expert

I’m going to guess that the main reason is the 8GB of Unified Memory (listed there as “Built-in memory)”.

The Lightroom Classic System Requirements say that 8GB is the Minimum amount, and 16GB is Recommended. I don’t think that’s changed for version 14.

The reason 16GB is Recommended is that after the amount that macOS needs, Lightroom Classic runs best with 12GB or more to itself. So with 16GB that sort of works, and with 8GB memory is strained.

Compounding that problem is that on an Apple Silicon Mac (M1 through M4), memory for graphics acceleration (features that use the GPU) comes out of system memory. In earlier versions of Lightroom Classic that was less of a factor, but recent versions take advantage of the GPU a lot more, and that’s a great thing. But with only 8GB memory, there isn’t a lot of memory left to give to the GPU, so GPU acceleration can’t be used much.

If there are other applications left open, like a web browser with lots of tabs open, they’ll need memory too.

If my idea is correct, after your Mac is running and using Lightroom Classic for a while, if you open Activity Monitor and click the Memory tab, my guess is that the Memory Pressure tab will not be green, but yellow or red.

My M1 Pro has 32GB of Unified Memory and it runs great, but 24GB should work well these days. I personally think 16GB is the real minimum today for this kind of work.

K

kgdizainslv

Known Participant

I have mac studio 32gb ram and 1tb ssd, and lightroom clasic 14.0.1 in develope mode is very slow and painful to work!!!!!

Lightroom Classic version: 14.0.1 [ 202410161356-30922cfc ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 15
Version: 15.1.0 [24B83]
Application architecture: arm64
Logical processor count: 10
Processor speed: NA
SqLite Version: 3.36.0
Built-in memory: 32 768,0 MB
Dedicated GPU memory used by Lightroom: 2 255,3MB / 21 845,3MB (10%)
Real memory available to Lightroom: 32 768,0 MB
Real memory used by Lightroom: 5 210,7 MB (15,9%)
Virtual memory used by Lightroom: 415 253,7 MB
Memory cache size: 300,1MB
Internal Camera Raw version: 17.0 [ 2043 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 2584MB / 16383MB (15%)
Camera Raw real memory: 2817MB / 32768MB (8%)

Cache1:
Final1- RAM:2 110,0MB, VRAM:0,0MB, A4_00216.ARW
NT- RAM:2 110,0MB, VRAM:0,0MB, Combined:2 110,0MB

Cache2:
m:300,1MB, n:253,7MB

U-main: 111,0MB

Standard Preview Size: 6400 pixels
Displays: 1) 6400x3600, 2) 2560x1440, 3) 2560x1440

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

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/T7/10.26 - DPD kalendars 2025/10.26 - DPD kalendars 2025/10.26 - DPD kalendars 2025.lrcat
Settings Folder: /Users/kasparssilins/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) Aurora HDR
2) ColorChecker Camera Calibration
3) Loupedeck2
4) Luminar AI
5) Luminar Neo
6) Topaz Photo AI

Config.lua flags:

J

Jao vdL

Community Expert

Try running without display 1. The display with the enormously high 6K resolution. This one will definitely cause the develop module to lag as you're basically needing to live calculate the entire raw image. Also, going in and out of Develop it will need to create an absolutely massive standard preview of 6400 pixels which will cause a short lag going out of develop. Also, running multiple displays with Lightroom Classic using the secondary display will make it perform worse as it updates the preview for the secondary display constantly when you're making develop adjustments. So try disabling the secondary display if you have that turned on. I have basically the same machine (MBP M1 Max 32GB/1TB) with a 3456x2234 main display and the catalog and images on a T7 SSD and it flies. My images are mostly 14-bit raw from a Nikon Z7 so very comparable to files from that Sony you're using.

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