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A
AnnapPhotog
Participant
October 29, 2024
Question

Slow performance Lightroom Classic Apple M1

  • October 29, 2024
  • 3 replies
  • 5905 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:

 

 

3 replies

J
Community Expert
Jao vdLCommunity Expert
Community Expert
November 2, 2024

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
November 2, 2024

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
November 2, 2024

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

dj_paige
dj_paige
Legend
October 29, 2024
quote

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
November 2, 2024

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
KR SealsCommunity Expert
Community Expert
November 2, 2024

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
Conrad_CCommunity Expert
Community Expert
October 29, 2024

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
    November 3, 2024

    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:

     

     

    W
    wdtennis
    Participant
    November 17, 2024

    I’ll try using 2560x1440px, but as I mentioned before, I had no issues previously. Now, in the Develop module, every slider lags, and everything is extremely slow. It’s 3x slower than it was in v13.


    Just reading this as I am experiencing similar problems on a 2017 iMac.   I  had to update to OS Ventura to be able to update to the latest versions of LRC and PS.  Since doing so my sliders are slow and everything feels choppy.   If I shut down LRC and then reopen it works well for about a minute and the starts to slow down again.    I wasn't having any problems when I was running OS Mojave and the previous version of LRC. 

     

    I spent about an hour on the phone with an assistant at Adobe who tied into my CPU, cleaned up things, removed LRC and installed it again and at first it appeared the problem was solved but as soon as I got off the phone with him the issues returned.  I have also tried many things others have suggested with no luck. 

     

    It is making work difficult and I really need to find a solution.  Were you  able to figure anything out? 

     

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