Lightroom Classic 9: Extremely slow after update

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  • Problem
  • Updated 8 months ago
  • (Edited)
After updating LrCC to version 9 - the program is now incredibly slow.  All graphics accelerators are on and working. 

Cropping is difficult and staggers now, the develop module is slow too - all sliders lag to the point where it's impossible to work on anything - especially when you have a high volume of images to deliver.
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David Hewison

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Posted 8 months ago

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Victoria Bampton - Lightroom Queen, Champion

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That sounds like a graphics card issue, or the graphics card is too old to be supported anymore. Which card, and have you updated the driver? 
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Martin Von Stoll

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I have the same problems. how do you revert back to the older version
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David Hewison

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Found the solution: https://feedback.photoshop.com/photoshop_family/topics/crop-function-unusable?topic-reply-list%5Bsettings%5D%5Bfilter_by%5D=all

  1. Open Lightroom.
  2. Invoke Lightroom > Preferences... menu command
  3. When the Preferences dialog appears, select the Presets tab.
  4. Click on the button labeled “Show All Other Lightroom Presets...”
  5. Lightroom will reveal the root preset folder in the Finder/Explorer.
  6. Now go to https://adobe.ly/2JW0JQA and download the config.lua file and copy it into the Lightroom preset folder that Finder/Explorer selected at step 5. 
  7. Relaunch Lr. 
  8. Invoke Lighroom>Help>System Info... menu command. If you’ve followed the above steps correctly, you should see an info section that shows the following

 

Config.lua flags: 

Develop.enablePostCropVignetteEffectDuringCrop = false

---

So I reinstalled the latest version, added this new config file according to the instructions above and totally sorted now. 

Crop works perfectly now, as does the rest of Lr. 
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David Hewison

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Martin, you can go to the Adobe cloud software where you would normally update - you'll see 3 dots next to the open/install button for Lr Classic - click that and it will give you options to revert back to a previous version.

However, the fix I posted above should work too for the latest release. 

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Jerry Syder

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That config flag is ONLY for the crop lag and has no impact on other functions(sliders in other parts of LR). Are you saying that the slider-lag is now working for you, David? 
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David Hewison

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The slider lag was solved by updated my graphics driver. The crop lag was my main issue.  And its that the config file fixed.
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Victoria Bampton - Lightroom Queen, Champion

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You might want to cross check this thread:  Crop function unusable
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Edmund Gall

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If Rikk's summary response above is a viable workaround (as it seems to be, based on others' feedback), might be worth tagging this so it can be the first thing folks see if they come across this thread...
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Jerry Syder

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Actually, the fix is as per Simon's response below to disable 'Acronis Active Protection'. This same user, as well as others, has confirmed that it worked.
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William Naiman

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I entered exceptions for Lightroom and Photoshop into the Acronis Active Protection settings.  At first glance, that worked just as well as the more global deactivation switch for Active Protection.

I'm curious if any LR 8 users have excessively slow LR performance and can try the Acronis fix.  It would be nice to know if that gremlin is unique to LR 9, or has been causing performance degradation for a long period of time.

I opened a ticket with Acronis regarding the issue and let's see what they have to add to the issue.
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LightroomUser2408

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Hello,
Can you please let me know the steps you took to enter exceptions for Lightroom and Photoshop into Acronis Active Protection? I turned OFF the whole thing yesterday but I think the way you did is the right way to do it.
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Volker Brecht

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one more tip, you can in Acronis in the menu "active Protection" - "manage process" add exceptions e.g. photoshop.exe and lightroom.exe. Then ACR 12 runs very well and you still have the protection of "actice protection"




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Andy Hewitt

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I hadn't really thought about this much, but also noticing some lag here on a Mac system. Not so bad it's unusable, but it is noticeable compared to the previous version.

There's definitely a bit of lag with most sliders before you see any effect being applied. More annoying is the way the screen redraws after a zoom change now. It's redrawing in blocks, whereas before it simply took a while to change as a whole.

Have tried the above fixes (the Lua and the uninstall/reinstall), but didn't seem to make any difference.

I could try the preferences reset too I suppose, but there's so many things to set up again, that I'll do that as a last resort.


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Simon Chen, Principal Computer Scientist

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The workaround is intended for customers who experienced crop slowdown only.
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Simon Chen, Principal Computer Scientist

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I was brought to attention of this camera raw thread https://feedback.photoshop.com/photoshop_family/topics/camera-raw-lagging-issue-after-update-dng-pictures). One suggestion there is to stop the service "Acronis Active Protection" service on the machine (an anti-ransomware technology). One Lightroom customer reported to me that turning off the "Acronis Active Protection" have helped resolved the slowness he experienced in the latest Lightroom update in multiple ways, including the sliders and crop, even without the above workaround. Please give this a try if it applies to your particular situation.
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William Naiman

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I performed the uninstall and reinstall as suggested earlier in the this thread.  I also did the same for PS and Bridge.  PS was giving me some funky brush quirks (and still is).

LR still takes about 3-5 minutes to load.  It did this in version 8.x as well.  FWIW, the first launch of LR after the reinstall was quick.  After doing some round trip editing of LR -> PS -> Topaz -> PS -> save to LR, the next launch of LR was very slow.  I also notice some auto import issues with PS saving back to LR.  

I also noted the mention of the Config.LUA file.  I checked my settings for LR and noticed an entry for OpenGl and took a screen shot (inserted below in this response).  I thought that was strange since my understanding is Direct X is now the norm for LR 9.   There is a line in the System Info for my 1050 TI graphics card and does indicate Direct X.  I overwrote the entry with the one posted for the crop fix.

I also noticed in this thread about Acronis Active Protection causing a problem - yes, I use Acronis True Image and active protection is on.  I suppose, since I am running Norton, I can experiment with turning off Acronis Active Protection.  I'll report back on whether this helps or not.

Side comment - One would think that a public beta would help Adobe to find bugs before an  official release.  I contacted Adobe offering to be a Beta tester with an NDA but never heard back, one way or the other. 





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Jerry Syder

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Side comment - One would think that a public beta would help Adobe to find bugs before an  official release.  I contacted Adobe offering to be a Beta tester with an NDA but never heard back, one way or the other. 
Well, the thing about this one, 'Acronis Active Protection' being the issue is, it's something not every beta tester would have. Even if one person had it installed and reported poor performance, it would be tedious to isolate that one part of a given program. Unless the tester went switching off one service at a time of course. Anyway,, delete that config file and switch off Active Protection and you can put an end to all the troubleshooting you're doing :-) 
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LightroomUser2408

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All my issues are resolved by turning Off 'Acronis Active Protection'. See if that makes a difference for you too.
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Edmund Gall

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Sorry if I misunderstood. It seems two problems have become intertwined in this thread:
  • P1: a general slowness in displaying changes made with sliders, and
  • P2: slow display of changes made with the Crop tool.

Along the way, we also had five recommended workarounds:
  • W1: Reset Preferences (e.g. using Rikk's steps above).
  • W2: Reset Preferences and config.lua flags (e.g. David Hewison's steps above)
  • W3: Update graphics drivers (e.g. David Hewison's post above)
  • W4: Enter an exception in Acronis Active Protection Settings (e.g. William Naiman's post above)
  • W5: Disable Acronis Active Protection (e.g. Simon Chen's Response above).

Perhaps someone can just clarify if I've summarised the problems and proposed workarounds completely & accurately, and –while we wait for the results of a formal problem analysis– clarify which of the above workarounds apply to which problem(s). Cheers!..

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Rikk Flohr, Official Rep

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There are likely more than just 2...

P2 is affected by W2
P1 is affected by W5
W1, W3 are general fixes for all slowness and fixes some slowness complaints by those not encountering Crop-specific or who are not running Acronis.