Lightroom Class CC - Sluggish Develop module after a while

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  • Updated 2 years ago
I have upgraded to Lightroom Classic CC.  I have around 600 photos from an event.  A number of them require a little editing, mainly cropping.  When I start the editing session all is good but after 20 or so photos the Develop module slows right down until it takes at least 10 seconds to go to the next image.  This occurs with or without the GPU enabled.  The only fix is to restart Lightroom and then it is good again for anther 20 or so images.
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Tom de Jongh

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  • frustrated, and dissapointed

Posted 2 years ago

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Roberto Gonzalez Berdini

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Same problem as the previous release. They didnt fix anything. as bad as always (lag). We cannot trust Adobe anymore. I think I ́ve be waiting for a solution too long and I ́ll give C1 one chance. Interesting debate topic on adobe forums "Lightroom Classic CC seems slower than previous Lightroom version it replaced"
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Victoria Bampton - Lightroom Queen, Champion

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It's very weird, I'm hearing reports of it being faster for a lot of people, but there are also reports of it being slower for some people. Of course the photographers with performance problems are much more vocal, understandably, but unfortunately shouting doesn't help get it tracked down and solved, so you did the best thing posting it here. Have you created a separate post describing your issues Roberto, or are they exactly identical to Tom's problem? (In which case, your system specs would also be helpful for the engineers)
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Roberto Gonzalez Berdini

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First of all, I apologize for my English.

More or less everyone that are having problems with Lightroom (and Camera RAW) has the same issues, basically sluggish performance, mainly in develop module. Adobe knows all this problems because we did a survey sending them a lot of info.

I tried to solve the problem speaking to the technical support for the last two years. They are not technicians but simple telephone operators so I wasted a lot of time just explaining this problem (this is another big complain with Adobe, we are professionals and we need technicians solving our problems and not telephone operators. We are working and we couldn’t waste our time training their staff). After scaling the case I had a simply reply: my equipment does not have the minimum specs to work in a 4K resolution (i5@3.3Ghz x4 cores / 16GB / SSD / Radeon 260x 2GB / W10, REALLY?) and their solution was that I had to downscale my resolution to 1080p (I ́m not joking). Adobe said that this new version of the software was especially focused on solving this problem and they didn ́t (at least in many cases). Why other software are much more fluid with the same hardware specs? the only solution they can give us is to reduce the resolution to 1080P? The same sluggish performance  is suffered for customers with very high end systems so I ́m tired of talking (and paying) for that reason I consider that enough is enough.
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Rob Betz

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Same here. Been using Lightroom since it came out. Now looking at ACDSee and CaptureOne, BOTH of which are faster. 

Contacted Adobe about this issue, as Lightroom is even SLOWER after the recent update. Golf clap, Adobe. You've managed to make it even worse. Their response was for me to come here and vote on this. Ummmm.....OK....
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Victoria Bampton - Lightroom Queen, Champion

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What are your full specs Tom, from Help menu > System Info?

Simon Chen (one of the primary engineers) has been recommending option 2 on this page for a variety of Develop preview issues. I'm not 100% sure it'll help in this case, but there's no harm in giving it a try.
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Tom de Jongh

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Specs are:
Lightroom Classic version: 7.0 [ 1140024 ]
License: Creative Cloud
Operating system: Windows 10
Version: 10.0
Application architecture: x64
System architecture: x64
Logical processor count: 8
Processor speed: 2.6 GHz
Built-in memory: 24573.4 MB
Real memory available to Lightroom: 24573.4 MB
Real memory used by Lightroom: 3028.2 MB (12.3%)
Virtual memory used by Lightroom: 5460.2 MB
GDI objects count: 693
USER objects count: 2248
Process handles count: 2724
Memory cache size: 0.0MB
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 1956MB / 12286MB (15%)
Camera Raw real memory: 1958MB / 24573MB (7%)
System DPI setting: 96 DPI
Desktop composition enabled: Yes
Displays: 1) 1680x1050, 2) 1680x1050
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info: 
DirectX: NVIDIA GeForce GTX 670

Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic CC
Library Path: E:\Lightroom Catalogs\MasterCatalog\MasterCatalog-2-2.lrcat
Settings Folder: C:\Users\tom.HOME\AppData\Roaming\Adobe\Lightroom

Installed Plugins: 
1) AdobeStock
2) Export to Autopano Giga 3
3) Export to Autopano Giga 4.2
4) Export to Photomatix Pro
5) Facebook
6) Flickr
7) HDR Efex Pro 2
8) jf Zenfolio
9) Keyboard Tamer
10) Nikon Tether Plugin
11) ON1 Browse 10
12) ON1 Photo RAW 2017
13) ON1 Resize 2017

Config.lua flags: None

I will try the suggested change and let you know if there is any change to the performance issue.
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Tom de Jongh

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I tried the suggested change but there was no change to the slow down that occurs in the develop module after editing 20 or so images.  What do I do now?  Wait until it's acknowledged as a problem?  Reinstall?  Is that likely to help?  Put up with restarting Lightroom every 10 minutes? 

Other people are having this issue and I had an Adobe tech do a remote session on my PC and they acknowledged my PC has an issue but that 'They Have No Other Reports Of This Issue".  Really????

Please, if you are having issues with the develop module slowing down over time let Adobe know.
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Venkatesh Penjuri, Official Rep

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Tom, the system info you have attached, was it captured when Lr had become slow(i.e.,just before relaunch)? What camera files are you working on? I would like to know the file size of the images you are editing.
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Tom de Jongh

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I don't recall when the system info was captured.  I will need to submit another one.  Do you prefer it when launched or after it is slow, or both?
I am using a Nikon D500, and using RAW files of around 27MB each.
I have been using this camera for almost 12 months and never had issues with the previous version of Lightroom.


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Tom de Jongh i also shoot with a Nikon D500 and am experiencing the same issues as you in Lightroom, did you manage to find a solution?
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Tom de Jongh

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No. I'm still waiting on someone from Adobe to get back to me as they asked what camera. I keep providing information but it's never acknowledged. Hopefully enough people will start seeing the same problem and Adobe will have to admit there is an issue.
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John Ellingson

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I use both a D500 and a D850 and big files slow everything down. I talked to one of my techs who said to reduce the use of cache, as PS is a hog and will grab cache it is not using. 
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I see a similar behaviour with my 2015 iMac 27"/5k as well. It is not as prominent as Tom described it, but LR still slows down after a) editing several images and b) after left open in background for several hours. I observed this not only in the development modul but in the library module as well.

Two examples:
1) Yesterday, I changed the camera profile for about 100 images and did some minor editing to some of those images as well. For about 30 images everything went smooth, but after that the dropdown for camera profiles seemed to lag. I have to switch the camera profile two or three times for several images until it finally applied the profile selected. Sometimes the process was updates as well, sometimes not.

2) And the last weekend I edited keywords for about 800 images. Everything went smooth, but after a pause of about an hour Lightroom did no longer display all keywords of selected images and I could not set a new one. After restarting Lightroom everything was smooth again and I could easily set a new keyword for all 800 images at once.

Over all Lightroom Classic shows for me a far better performance since the update, but the slowing down after working with it for a while is still there. In my case it is not so serious, since I seldom edit more than 100 images in a row, therefore I probably would not have posted my oberservings here as a new topic. I think that is why there are very different reports on performance.
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M C Schlotzhauer

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I was on the subscription model and then updated to 7.0 Classic. With the exception of going from 5.7 to 6.0 where I and many others experienced slower performance, all the ver 6 updates didn’t have much of a performance hit in either direction. The 7.0 Classic update from 2015 CC has resulted in quite a noticeable decrease in performance for me on my late 2015 iMac running 10.12 Sierra w/24gb. Getting beach balls where I never used to in the Develop module and the visual effects of slider movement are delayed just enough to be irritating. Again this wasn’t the case with 2015 CC 6.12. Was really looking forward to seeing some speed but I’m shocked to actually be experiencing worse performance. BTW: tried disabling the GPU but it had no effect.