v10 is very slow on iMac Pro

New Here ,
Oct 21, 2020

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After updating to v10, Lightroom Classic is dramatically slower in navigating photos in the Library than v9.4. How can I go back to 9.4?

 

Scrolling takes seconds to move a row or two. Zooming to/from 1:1 can take a couple of seconds. Lightroom Classic is basically unusable for navigating photos now.

 

CPU: 2.5GHz 14-Core Intel Xeon W

Memory: 128GB

GPU: Radeon Pro Vega 64 16GB

MacOS: Catalina 10.15.7

 

I've tried disabling GPU acceleration, with no discernable difference in performance. 

 

Any suggestions on what to try? Is it easy to go back to v9.4?

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v10 is very slow on iMac Pro

New Here ,
Oct 21, 2020

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After updating to v10, Lightroom Classic is dramatically slower in navigating photos in the Library than v9.4. How can I go back to 9.4?

 

Scrolling takes seconds to move a row or two. Zooming to/from 1:1 can take a couple of seconds. Lightroom Classic is basically unusable for navigating photos now.

 

CPU: 2.5GHz 14-Core Intel Xeon W

Memory: 128GB

GPU: Radeon Pro Vega 64 16GB

MacOS: Catalina 10.15.7

 

I've tried disabling GPU acceleration, with no discernable difference in performance. 

 

Any suggestions on what to try? Is it easy to go back to v9.4?

TOPICS
Performance

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285

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Oct 21, 2020 4
LEGEND ,
Oct 21, 2020

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Check your plugins for any that are incomptable with v10

 

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Oct 21, 2020 1
New Here ,
Oct 21, 2020

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Thanks for the suggestion!

 

To be certain, I went ahead and disabled all of my plug-ins and confirmed that performance of v10 is still unusable.

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Oct 21, 2020 2
Community Beginner ,
Oct 21, 2020

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I just want to jump in and say that I'm experiencing exactly the same thing after upgrading to v10.0 on a pretty powerful "trash can" Mac Pro:

 

Mac Pro (Late 2013)

3 GHz 8-Core Intel Xeon E5

32 GB 1866 MHz DDR3

AMD FirePro D700 6 GB

 

Loading, scrolling through the catalogue, or any catalogue operations in general are many times slower to the point where it's pretty unusable.

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Oct 21, 2020 2
Most Valuable Participant ,
Oct 21, 2020

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See this article for how to go back to a previous version:

https://www.lightroomqueen.com/roll-back-update-previous-classic/

 

[Use the blue reply button under the first post to ensure replies sort properly.]

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Oct 21, 2020 0
LEGEND ,
Oct 22, 2020

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See: https://feedback.photoshop.com/conversations/lightroom-classic/lr-10-classic-mac-gpu-support-perform...

 

That is in the official Adobe feedback site, where Adobe get involved. In fact one has.

 

If that problem sounds like yours, then consider adding to it

 

(use your Photoshop Family account to login)

 

If not the same, consider adding your own problem.

 

Include sys info as reported in LrC, include info from first line down to and including plugins.

 

 

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Oct 22, 2020 1
Community Beginner ,
Oct 22, 2020

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Thanks for this, I'll post there, but I believe our issue is different to what that post describes.

 

Disabling GPU Accellaration has no affect on my Lightroom's performance. In fact, having worked with it more since upgrading, all issues seem to do with the UI being slow rather than processing. All editing functions are actually working correctly and quickly but scrolling through the catalogue or even scrolling a side panel is taking long seconds to refresh.

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Oct 22, 2020 0
Adobe Community Professional ,
Oct 22, 2020

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I would urge anyone, but particularly macOS users, experiencing a drop in performance following the LrC10 update to report their issues on Lightroom Classic feedback forum at https://feedback.photoshop.com/topics/lightroom-classic/5f5f2093785c1f1e6cc40872

 

Disabling GPU, plugins, etc is very unlikely to resolve the issue. Therefore, if the performance degradtion is sufficient to have a detrimental impact on your workflow, then best way solution at present is to downgrade to LrC 9.4 using the Creative Cloud desktop Application (see below screenshot). Select Lightroom Classic, click on the three-dots, then choose 'Other Versions'.

 

Untitled-1.png

 

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Oct 22, 2020 1
Community Beginner ,
Oct 29, 2020

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@ Ian,

 

Downgrading back to Classic 9.4 is what I did.

However, when is it save to update to 10???

 

Many thanks,

Laura

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Oct 29, 2020 0