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Besim Mydyti
Besim Mydyti
Known Participant
September 5, 2024
Question

Building Standard previews is slow

  • September 5, 2024
  • 7 replies
  • 2806 views

I had intel 7800X intel extreme CPU, and I upgraded to 10980XE about $1100
but nothing changed, then from help, they told me to change GPU, I has nvidia 1070, I upgraded to nvidia 4070 12gb, nothing changed.... 
Also added new RAM 128 GB, 
same.... I spent more than 2000 usd, and nothing changes.... 

 

Update: changed cpu Fan and case, 3 x 420mm cpu fans (arctic freezer) and 6 x 420mm case fans.
Lightroom Classic is super slow in latest versions, especialy buiding previews....  

    7 replies

    Besim Mydyti
    Besim MydytiAuthor
    Known Participant
    September 25, 2025

    Added new cooler 420 x 3 fans, bought new tower with 420 x 3 fans, also added 3 extra fans. 

    Nothing changed... 

     

    In fullhd works fine, but in 4 monitor its extremely slow. 

    dacian groza
    dacian groza
    Participating Frequently
    November 4, 2024

    I'm also disappointed with the performance when exporting standard size previews (1600 px wide). I have a Macbook pro M3 Max with 128 gb Ram. It's ridiculous.

      dacian groza
      dacian groza
      Participating Frequently
      November 4, 2024

      typo: generating previews, not exporting

      Conrad_C
      Community Expert
      Conrad_CCommunity Expert
      Community Expert
      September 5, 2024

      If this is about previews (not the Develop module), then:

       

      Preview generation is completely dependent on CPU single core speed, and also on the number of CPU cores when Generate Previews in Parallel is enabled in Preferences / Performance.

      With 18 cores, the 10980XE should in theory be very good, and assuming there is no thermal throttling, it should generate previews much faster than my computer.

       

      At this time the GPU is not used for preview generation, so even the fastest GPU will not speed up previews. (Currently, a GPU accelerates the Develop module, export, and AI Denoise.) [Update: As of Lightroom Classic 14.5 released in August 2025, the GPU can now be used to accelerate preview generation, and it can make a big difference. Make sure this is enabled in Preferences, Performance tab.)]

       

      Adding RAM probably won’t improve preview generation speed. Adding RAM only helps if there is not enough RAM (8GB or 16GB), but probably above 32GB adding more RAM will probably make no difference.

       

      If there is more than 100GB of free space available, freeing up more will probably not make a difference in preview generation speed. But keep in mind that if the folder containing your catalog is on your boot volume, if you are generating thousands of previews, the …previews.lrdata cache will grow to many gigabytes, so just make sure there is always enough free space to let it grow while still maintaining as much free space as you can over 100GB.

       

      If this is about standard previews specifically, then:

       

      In Catalog Settings, check how you have defined your Standard Preview Size. For example, if using a 4K or HiDPI display and left at Auto, Standard previews may be larger pixel dimensions than you really need, and larger previews take longer to render. The other day I thought previews were taking too long, so I manually reduced Standard previews to 2048 pixels on the long side because I decided that was all I need.

       

      Also check Preview Quality, because of course a higher Preview Quality setting takes longer to render. I am not so concerned about perfect quality for previews, because if I want to see the best possible rendering of an image I switch into Develop (which does not use previews, it always renders from raw).

       

        Besim Mydyti
        Besim MydytiAuthor
        Known Participant
        September 11, 2024

        Actually all the problem comes from 4k monitor, I changed display to FULL HD, building smart previews were too fast, but in 4k takes days.... 😞 
        I will try to decrease the preview size and trying if it will work on 4k display better with lower preview size.

         

        thanks for your comment.

        GoldingD
        GoldingD
        Legend
        September 5, 2024

        And one final inquiry, I suspect I would be asking this after seeing your system info, so to ask now instead of later.

         

        The hard drive your catalog is on. How much free space in percent (%). Looking for at least 20%, some say 25%.

         

        Besim Mydyti
        Besim MydytiAuthor
        Known Participant
        September 5, 2024

        its about 130gb/1000gb 

        Maybe I need to free some space ?!

         

        GoldingD
        GoldingD
        Legend
        September 5, 2024
        quote

        its about 130gb/1000gb 

        Maybe I need to free some space ?!

         


        By @Besim Mydyti

         

        so, 130/1000=0.13, Yep too low. Either find space or relocate the catalog or other files.

         

        Incidentally:

         

        • That catalog can be on any connected hard drive, internal or external. And what hard drive you select can effect performance, the catalog can take advantage of being on your fastest hard drive, AS LONG AS their is enough space.
        • The catalog cannot be on any form of network share. Not on an actual file server. Not on a NAS, not in the Cloud.
        • (not applicable in your case) As stated above, Avoid placing the catalog on OneDrive or DropBox. Nor allow any aoto sync to OneDrive or DropBox. If your library path is something like:

          Library Path: C:\Users\username\OneDrive\Pictures\Lightroom\Lightroom.lrcat

          Then you need to fix that (locate to a  different folder, typically helps)
        • The Camera RAW CACHE can also be on any connected hard drive, and can take advantage of hard drive speed. It does not have to be on the same drive as the catalog.
        • The photos should be on a connected hard drive, any hard drive, no advantage of being on a speedy hard drive, they do not have to be on the same drive as the catalog.
        GoldingD
        GoldingD
        Legend
        September 5, 2024
        I upgraded to nvidia 4070 12gb

        When you installed the GPU driver, did you:

         

        • Select the Studio Driver (recommend), not the Game Ready Driver
        • Select Custom install as to force a clean install

         

        Besim Mydyti
        Besim MydytiAuthor
        Known Participant
        September 5, 2024

        yes it is studio driver, also clean installed... 😞

        GoldingD
        GoldingD
        Legend
        September 5, 2024

        Also, can you post a screenshot of your LrC /Preferences/Performance/

         

        example:

        Besim Mydyti
        Besim MydytiAuthor
        Known Participant
        September 5, 2024
        Screenshot_2024-09-05_205212.png
        GoldingD
        GoldingD
        Legend
        September 5, 2024

        Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut out as that is just so much dead space to us non-Techs and it takes up vast amounts of scroll space making the reply less readable and less likely that others will bother with your post.

         

        example:

        Besim Mydyti
        Besim MydytiAuthor
        Known Participant
        September 5, 2024
        Lightroom Classic version: 13.5.1 [ 202408271704-d15d09cd ]
        License: Creative Cloud
        Language setting: en
        Operating system: Windows 11 - Business Edition
        Version: 11.0.22631
        Application architecture: x64
        System architecture: x64
        Logical processor count: 36
        Processor speed: 3.0GHz
        SqLite Version: 3.36.0
        CPU Utilisation: 0.0%
        Power Source: Plugged In
        Built-in memory: 130753.2 MB
        Dedicated GPU memory used by Lightroom: 3452.6MB / 12011.0MB (28%)
        Real memory available to Lightroom: 130753.2 MB
        Real memory used by Lightroom: 24350.2 MB (18.6%)
        Virtual memory used by Lightroom: 29643.4 MB
        GDI objects count: 1611
        USER objects count: 3526
        Process handles count: 14544
        Memory cache size: 8626.5MB
        Internal Camera Raw version: 16.5 [ 1954 ]
        Maximum thread count used by Camera Raw: 5
        Camera Raw SIMD optimization: SSE2,AVX,AVX2
        Camera Raw virtual memory: 2305MB / 65376MB (3%)
        Camera Raw real memory: -314669MB / 130753MB (-240%)
         
        Cache1: 
        Final1- RAM:37.0MB, VRAM:0.0MB, 7907D87B-6D46-435D-BA13-F1E3FE944F41.dng
        Final2- RAM:37.0MB, VRAM:0.0MB, 2A51F903-5713-454E-B553-8B28AD50C046.dng
        Final3- RAM:37.0MB, VRAM:0.0MB, A9415B7A-812E-487F-81A4-A23EDE9B2449.dng
        Final4- RAM:37.0MB, VRAM:0.0MB, 3A4E6922-C427-4E2E-9D81-2B89A0408AB1.dng
        Final5- RAM:37.0MB, VRAM:0.0MB, 09E624C4-5C76-4346-ADC4-C08C96CDEEC0.dng
        Final6- RAM:37.0MB, VRAM:0.0MB, B4B71D21-32D9-4BCA-9734-928EBE52F17A.dng
        Final7- RAM:37.0MB, VRAM:0.0MB, EF661422-C676-49C2-97A1-E613010A0AEE.dng
        Final8- RAM:37.0MB, VRAM:0.0MB, 8A321892-0097-4C84-A2CD-EB4AE8A5D998.dng
        Final9- RAM:37.0MB, VRAM:0.0MB, 565DED66-3BAB-4085-9D40-CD5602E8B4C3.dng
        Final10- RAM:37.0MB, VRAM:0.0MB, E70EF234-357E-4A10-A347-588A23902487.dng
        Final11- RAM:157.0MB, VRAM:502.0MB, A75D301F-383F-4D38-85D2-B7635B8BFF98.dng
        NT- RAM:527.0MB, VRAM:502.0MB, Combined:1029.0MB
         
        Cache2: 
        m:8626.5MB, n:407.0MB
         
        U-main: 195.0MB
         
        System DPI setting: 96 DPI
        Desktop composition enabled: Yes
        Standard Preview Size: 3840 pixels
        Displays: 1) 3840x2160
        Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No
         
        Graphics Processor Info: 
        DirectX: NVIDIA GeForce RTX 4070 (32.0.15.6081)
        Init State: GPU for Export supported by default
        User Preference: Auto
        Enable HDR in Library: OFF
         
        Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic
        Library Path: D:\Users\bescki\Pictures\catalog 2024\2024new\2024new.lrcat
        Settings Folder: C:\Users\besck\AppData\Roaming\Adobe\Lightroom
         
        Installed Plugins: 
        1) AdobeStock
        2) Flickr
        3) Loupedeck2
        4) Nikon Tether Plugin
         
        Config.lua flags: 
         
        Adapter #1: Vendor : 10de
        Device : 2786
        Subsystem : 89291043
        Revision : a1
        Video Memory : 12011
        Adapter #2: Vendor : 1414
        Device : 8c
        Subsystem : 0
        Revision : 0
        Video Memory : 0
        AudioDeviceIOBlockSize: 1024
        AudioDeviceName: $$$/dvaaudiodevice/SystemDefaultAndEffectiveDeviceName=System Default - Speakers (Realtek High Definition Audio)#{comment}DVAAU-4201250: Open the audio hardware preferences page.
        AudioDeviceNumberOfChannels: 2
        AudioDeviceSampleRate: 48000
        Build: LR5x120
        Direct2DEnabled: false
        GL_ACCUM_ALPHA_BITS: 16
        GL_ACCUM_BLUE_BITS: 16
        GL_ACCUM_GREEN_BITS: 16
        GL_ACCUM_RED_BITS: 16
        GL_ALPHA_BITS: 0
        GL_BLUE_BITS: 8
        GL_DEPTH_BITS: 24
        GL_GREEN_BITS: 8
        GL_MAX_3D_TEXTURE_SIZE: 16384
        GL_MAX_TEXTURE_SIZE: 32768
        GL_MAX_TEXTURE_UNITS: 4
        GL_MAX_VIEWPORT_DIMS: 32768,32768
        GL_RED_BITS: 8
        GL_RENDERER: NVIDIA GeForce RTX 4070/PCIe/SSE2
        GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIA
        GL_STENCIL_BITS: 8
        GL_VENDOR: NVIDIA Corporation
        GL_VERSION: 4.6.0 NVIDIA 560.81
        GPUDeviceEnabled: false
        OGLEnabled: true
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