Slow rendering of item after clicking on filmstrip thumbnail

[chrisb35753520]

Hello, I'm running lightroom classic on windows 11 pc with the i9-14900K Processor with a 4090 GPU and 64G of ram and lightroom runs soooooo slow.  like you click on a photo down below on the film strip area and it takes like 10 seconds or more to pull the photo.  The catalogue probably holds around 110,000 ish photos.  also making adjustments, there is a few second delay, for example, if you are raising or lowering exposure.  Another is exiting lightroom it takes a while for the pop up to appear to close out of the program.  anyone else experiencing this?  Thanks in advance!

[dj_paige]

Make sure you have the latest Studio driver (not game driver) for your GPU.

[chrisb35753520]

I just changed it, although, i feel it is slightly faster, it still isn't great.  I will check it next time i take some more photos which will be the end of the week.  thanks for the reply!

[GoldingD]

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.

[chrisb35753520]

Lightroom Classic version: 13.2 [ 202402141005-bf1aeb84 ]

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: 32

Processor speed: 3.1GHz

SqLite Version: 3.36.0

CPU Utilisation: 0.0%

Built-in memory: 65276.9 MB

Dedicated GPU memory used by Lightroom: 5480.8MB / 24142.0MB (22%)

Real memory available to Lightroom: 65276.9 MB

Real memory used by Lightroom: 2310.0 MB (3.5%)

Virtual memory used by Lightroom: 8305.5 MB

GDI objects count: 806

USER objects count: 2770

Process handles count: 2413

Memory cache size: 14.3MB

Internal Camera Raw version: 16.2 [ 1763 ]

Maximum thread count used by Camera Raw: 5

Camera Raw SIMD optimization: SSE2,AVX,AVX2

Camera Raw virtual memory: 892MB / 32638MB (2%)

Camera Raw real memory: 1125MB / 65276MB (1%)

Cache1: 

Preview1- RAM:22.0MB, VRAM:0.0MB, DSC_0994.NEF

Preview2- RAM:57.0MB, VRAM:342.0MB, DSC_0993.NEF

NT- RAM:79.0MB, VRAM:342.0MB, Combined:421.0MB

Cache2: 

final1- RAM:298.0MB, VRAM:0.0MB, DSC_0994.NEF

final2- RAM:721.0MB, VRAM:3721.0MB, DSC_0993.NEF

T- RAM:1019.0MB, VRAM:3721.0MB, Combined:4740.0MB

Cache3: 

m:14.3MB, n:75.3MB

U-main: 98.0MB

System DPI setting: 96 DPI

Desktop composition enabled: Yes

Standard Preview Size: 2560 pixels

Displays: 1) 2560x1440, 2) 2560x1440, 3) 2560x1440

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 4090 (31.0.15.5161)

Init State: GPU for Export supported by default

User Preference: GPU for Export enabled

Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic

Library Path: C:\Users\crate\Pictures\Lightroom Catalog-v13.lrcat

Settings Folder: C:\Users\crate\AppData\Roaming\Adobe\Lightroom

Installed Plugins: 

1) AdobeStock

2) Flickr

3) Nikon Tether Plugin

Config.lua flags: None

Adapter #1: Vendor : 10de

Device : 2684

Subsystem : 40e41458

Revision : a1

Video Memory : 24142

Adapter #2: Vendor : 1414

Device : 8c

Subsystem : 0

Revision : 0

Video Memory : 0

AudioDeviceIOBlockSize: 2048

AudioDeviceName: $$$/dvaaudiodevice/SystemDefaultAndEffectiveDeviceName=System Default - SteelSeries Sonar - Gaming (SteelSeries Sonar Virtual Audio Device)#{comment}DVAAU-4201250: Open the audio hardware preferences page.

AudioDeviceNumberOfChannels: 2

AudioDeviceSampleRate: 96000

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 4090/PCIe/SSE2

GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIA

GL_STENCIL_BITS: 8

GL_VENDOR: NVIDIA Corporation

GL_VERSION: 4.6.0 NVIDIA 551.61

GPUDeviceEnabled: false

OGLEnabled: true

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[GoldingD]

Also, in a reply, please post a screenshot from LrC of your /preferences/performance/ tab.

[Ian Lyons]

I see that you have three displays connected although it's not clear whether LrC is actually using the secondary displays. Even if they're not being used by LrC, the mere fact that LrC  sees them can result in a performance hit. I submitted a bug for this some time back, but it hasn't been fixed yet. 

It's also important to note that GPU acceleration only works with the primary display (i.e. the display that the main LrC application is displayed on).  The secondary displays will only utilise the GPU for display, which can often lead to the secondary displays being out of sync with the primary. This is most obvious when using fullscreen mode.  Another example of where lags can occur would be when editing on the primary display with the secondary configured to display the image in loupe view.

BTW, your screenshot indicates that you've configured the GPU settings to force accelerated export. With your GPU card this hould not be necessary. Auto is the best option as it ensures that LrC only enables accelerated features that the self test carried out when launching LrC confirms are fully supported.

[chrisb35753520]

thanks for the response!  I do have 3 monitors, although lightroom you can only use 2 and i have them selected in pereferences.  I did change to auto in the gpu settings, although it didn't seem to change much.  and yes there is a delay between to screens in loupe.  

[Ian Lyons]

Check whether disconnecting two of the monitors leaving only one physically connected to the computer helps.

[chrisb35753520]

thank you for replying ian, It still was slow when i disconnected the 3rd monitor.

[chrisb35753520]

and thank you for the reply!

[GoldingD]

Based on the GPU, I think I can assume this is a desktop or workstation PC not a laptop or notebook, or all in one.

That being said, it can be easily modified for GPU (yours as you know is just fine) RAM and internal hard drives, as well as external hard drives. If you had a laptop and some ancient under spec video controller, and say just 8GB of RAM, then basically up the creek without a paddle.

So CPU, GPU, RAM, VRAM more than A-Ok.

That all said leads to an inquiry about hard drives. Two possible issues, Free hard drive space for the catalog and associated previews, looking for at least 20% free, some say 25%. Lack of space for the catalog can slow LrC down. And location of Camera RAW CACHE, as on a Windows PC, the CACHE and the Paging file can compete in read/wrights, causing a small performance hit.

1. That C drive, with the catalog on it, how much free space (%)?
2. That Camera RAW CACHE, can it be on a different drive?

• Note that the catalog can take advantage of being on your fastest hard drive
• Note that the Camera RAW CACHE can take advantage of being on your fastest hard drive.
• Note that their is no noticeable advantage of locating your photos on your fastest hard drive.
• Note that locating your photos not on a connected hard drive, but to a network share will slow things down.

[chrisb35753520]

thank you GoldingD for the response.  1) The lightroom catalogue AND RAW file locations are on the same external 12 TB drive with 9.6 TB free space remaining on that drive, so around 75% free space.  Its not my C drive.  2) Im not sure where the cache for the RAW cache would be located, how do i do that?

[rudolfl27731976]

Hi Chris, just stepping with some advice. Please make sure that your Lightroom catalog is on your C-drive (SSD) and not external. This file needs to be accessed fast and very often (every click / modification you make to the picture is stored) so it is recommended to have the catalog on the fasted accessible drive in your system

regards, Ruud 

[chrisb35753520]

i just realized i think it is on the c drive (SSD) but i don't see one with a more recent date except the backup ones in the pictures folder.  I am trying to find where the one from at least march of 2024 is.

[rudolfl27731976]

You can look up the path by going into the menu - EDIT - CATALOG - then the first tab shows the entire path and driver letter for the catalog that is in use. 

[chrisb35753520]

thank you for that, yes my catalog is on my SSD C drive that has 1.61 TB free of 1.81 TB.   This is gonna drive me nuts, haha.  

[chrisb35753520 · Accepted solution]

I think I may have found the solution.  After doing all of the suggested things to no avail, I searched hours and hours and found a reddit thread that had a solution with someone else with a high end pc but lightroom being super slow.  This worked for me.  I went to: C:\Program Files\Adobe\Adobe Lightroom Classic. Then in that folder, I right clicked the lightroom.exe file and selected "Properties", I then went to "Compatibility" tab.  I then clicked on the "Change high DPI Settings" button.  From there I went to the bottom where it says "high DPI scaling override" and clicked checkbox for the "Override high DPI scaling behavior" and changed the dropdown to "Application".  I clicked OK then Apply.  I restarted lightroom and it is running normal now!  Thanks for eveyones help and kuddos to the random reddit stranger that posted the solution to this.

[rudolfl27731976]

wow, i did not expect it there. Now I'm curious wether I can get a performance improvement by doing this on my 4 year old windows laptop. I changed the setting exact as you described, but did not observe any change.
Maybe your "slow" behaviour had to do with a combination of settings for screen resolution and scaling ... 
Interesting finding ...
Ruud

[chrisb35753520]

Bummer, sorry to hear it wasn't something that helped you.  Yea, it was bizarre and no way would i have figured that one out.  hope you find a solution to your issues!  

[shmuglak]

Thank you! It seems it solved my problem with the LrC.

[chrisb35753520]

glad to hear!

[recess29]

I was wondering why my LR Classic was so slow. Worked for me. Thank you so much!

[Scontact]

Any Ideal how to fix this on a mac