Lightroom CC Classic Very slow after update

  • 3
  • Problem
  • Updated 1 year ago
Since the last update, in both Library and Develop, about every 20 seconds Lightroom goes into a Not Responding state.  This lasts for several seconds before working again, but it is very very slow when it works in both modules.  For instance, when reviewing images to Pick or Reject, it takes between 5 and 8 seconds from an X (reject), right arrow to the next image, before it becomes active.  it's really painful.  Can anyone help?  Ive disabled my Graphics Processor, ive increased cache but to no avail.
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Annette Crook

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  • very frustrated

Posted 2 years ago

  • 3
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Rikk Flohr, Official Rep

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Annette, that is not typical behavior. Please go to Help>System Info... and copy your exact installed Lightroom version number and paste it here. 

It would also help us to know if you are Windows or Mac and what your OS version is. 
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Annette Crook

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Thank you.

Here is my version, which I believe is the current one.

Lightroom Classic version: 7.3.1 [ 1167660 ]

My OS is Windows 10 Home.

It's been running OK until the last update and now in both Library and Develop I get Not responding and then a several second wait - and then it clears for a minute or so - then the same again.
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Rikk Flohr, Official Rep

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7.4 was released today. Try updating Lightroom Classic CC and let us know if it is still misbehaving afterwards.
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Annette Crook

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I ran the update earlier and have only been using it about 10 minutes - but this now looks like it has solved the problem I was having. It's much quicker.  I'll be on it longer tomorrow to give it a full run out.
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Annette Crook

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I've been using it now since the update and whilst it's a bit better, I'm still getting the Not Responding status in both Library and Develop.    I'm wondering as the product evolves, could it be my 8Gb RAM isn't quite enough?
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Jerry Syder

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I don’t think so, or maybe but things are quite laggy - spinning circles, a lot of waiting to do things. Import and launching LR is slow and laggy while loading and getting things ready. Photo previews not rendering in thumbnails(grey squares), you name it. I’m on 32GB, Windows 10 and catalogue running off internal SSD
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Annette Crook

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Not my PC then!  That does sound just like the issues I'm having.  It's painful Picking and rejecting images and I've had a load of shoots lately so lots to go through. It's very frustrating.
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Annette Crook

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No I've got into things, its painfully slow and still getting the Not Responding.  It's at a point where I don't want to use it at all.  Please can anyone help?
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Rikk Flohr, Official Rep

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Annette, generally, the behavior you describe is not normal. Even though your system is slightly underpowered it should still function. I normally prescribe a reinstall - but in a precise way. 

1. Restart your system.
2. Uninstall Lightroom via the Creative Cloud App.
3. Restart your system a second time.
4. Wait 5-10 minutes without launching any other programs.
5. Reinstall Lightroom via the Creative Cloud App.
6. Restart your system. Launch Lightroom and wait 5 minutes after launch for all the processes to catch up.

Is your not responding message still coming up?
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roland barthes

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This just began for me a couple of days ago. The import dialog used to function quickly, and previews would appear as the import progressed. I could even begin work on an image while the import was proceeding. Now import takes forever, and sometimes will not complete at all, requiring a restart and another attempt to import the images that were not imported on the first try. I am using this for professional work, and this is completely unsatisfactory. I am on the verge of moving to a different application.

Lightroom Classic version: 7.5 [ 1186149 ]
License: Creative Cloud
Language setting: en
Operating system: Mac OS 10
Version: 10.11.6 [15G22010]
Application architecture: x64
Logical processor count: 8
Processor speed: 4.0 GHz
Built-in memory: 32,768.0 MB
Real memory available to Lightroom: 32,768.0 MB
Real memory used by Lightroom: 2,034.8 MB (6.2%)
Virtual memory used by Lightroom: 1,934.6 MB
Memory cache size: 2.9MB
Internal Camera Raw revision: 1001
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 521MB / 16383MB (3%)
Camera Raw real memory: 522MB / 32768MB (1%)
Displays: 1) 5120x2880

Graphics Processor Info: 
OpenGL: AMD Radeon R9 M395X OpenGL Engine

Check OpenGL support: Passed
Vendor: ATI Technologies Inc.
Version: 4.1 ATI-1.42.15
Renderer: AMD Radeon R9 M395X OpenGL Engine
LanguageVersion: 4.10
Total Video Memory: 4096 MB

Application folder: /Applications/Adobe Lightroom Classic CC
Library Path: /Users/roberto/Pictures/Lightroom/Lightroom 4 Catalog copy-2-2-2.lrcat
Settings Folder: /Users/roberto/Library/Application Support/Adobe/Lightroom

Installed Plugins: 
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Canon Tether Plugin
4) DxO FilmPack 3
5) DxO FilmPack 3 (64-bit)
6) DxO OpticsPro 10
7) DxO OpticsPro 10 Importer
8) Facebook
9) Flickr
10) FocalPoint
11) HDR Efex Pro
12) HDR Efex Pro 2
13) Luminar
14) Macphun Creative Kit
15) Nikon Tether Plugin
16) ON1 Effects Standalone 10
17) Perfect B&&W 8
18) Perfect Effects 8
19) Perfect Enhance 8
20) Perfect Photo Suite 8
21) Perfect Portrait 8
22) Perfect Resize 8
23) Tonality CK

Config.lua flags: None

AudioDeviceIOBlockSize: 512
AudioDeviceName: Soundflower (2ch)
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 44100
Build: 10.0x7
CoreImage: true
GL_RENDERER: AMD Radeon R9 M395X OpenGL Engine
GL_VENDOR: ATI Technologies Inc.
GL_VERSION: 2.1 ATI-1.42.15
OGLEnabled: true
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  Model Name: iMac

  Model Identifier: iMac17,1

  Processor Name: Intel Core i7

  Processor Speed: 4 GHz

  Number of Processors: 1

  Total Number of Cores: 4

  L2 Cache (per Core): 256 KB

  L3 Cache: 8 MB

  Memory: 32 GB

  Boot ROM Version: IM171.0157.B00

  SMC Version (system): 2.34f2

  Serial Number (system): D25RP1AWGQ17

  Hardware UUID: 02671EAF-D9BD-55A3-9B12-EFBECD776492

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Lars Erik Nes

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I run the same version and this version is very slow. 7.4 was working fine, but this 7.5 is really sluggish on my setup. (mac mini i7, 2,6 quad)
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Rikk Flohr, Official Rep

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Did you attempt the reinstall instructions related above?
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Lars Erik Nes

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No, not yet. Will give it a few more days. If still sluggish i will reinstall :-)