Lightroom Classic: Slow Performance - iMac Pro

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  • Updated 1 month ago
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Using Lightroom CC Classic on my new iMac Pro importing and editing RAW files from my Sony A7RIII isn’t as smooth as expected. Also the Interface is mit that smooth. I already changed preview cache to 100GB, and GPU acceleration on/off did not change anything. I expected much more performance in general. I’m using the 8-Core, 32GB, 1TB SSD + Vega 56 Model. Compared to my windows machine with almost same specs but with i7 8700K CPU (Windows 4K Screen) - on Windows compared to the MacOS Version it runs perfect. No stutter no lag. No loading times. When will the Programm gets optimized like the windows version for the Mac???I used Capture one 12 trial on my Mac and it’s extremely smooth - like LR on windows. I don’t want to change to CO12 but as it seems working with that garbage performance in LR CC of Classic, it doesn’t make no sense anymore then. I have read lots of same problems that people have performance issues on Mac. My Mac OS installation is a clean install of Mojave, newest LR Version. Please Adobe read this and optimize the Mac Version like the Windows Version!!! I need it for professional use!
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ChrisJMV

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Posted 6 months ago

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Gabriel

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This is really disappointing. :( It’s a shame Adobe is not doing anything to actually inprove the performance of Lightroom on Macs... I guess Photoshop on an iPad is much sexier and gets more press coverage.
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Bruno Guerreiro

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Hi Chris,

I’ve got the same issue.

It all started when I moved to the latest top spec MacBook Pro 13. The performance wasn’t too bad with version 8.0 but I had this weird problem where previews were pixelated no matter what.

Everything was working fine on my work windows laptop and I was still within 14 days of my purchase so I ended up returning the MacBook Pro and got an iMac Pro instead.

I didn’t really need the portability so happily traded that by performance. However, the MacBook Pro 13 was actually faster than the iMac Pro. The latest 8.1 version has helped a bit but the overall navigation, scrolling through the library, moving between photos and making edits, still have a lag/delay.

I’ve read that LR classic doesn’t make use of multi-cores and as the iMac Pro is designed for intensive work rather than snappy bursts, it may explain why we’re not seeing any benefits but rather issues.

I’ve been on the fence for a while with regards to Capture One and I feel your pain. I’ve used CO11 for a month last year but went with an Adobe subscription as I thought I would have better support. I actually like CO but they’ve still got a few things missing: panos, hdr, mobile app, limited keywording & metadata.

I’ll be following this thread so let me know if you need me to test anything just so you are not on your own.

Regards,

Bruno
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ChrisJMV

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Well yeah. I hope that will Adobe will still optimize it for Macs!! Otherwise I have to change to Capture One 12 and sure I will miss the cloud sync etc.

On Windows Lightroom CC Classic works like a charm.

Using Camers Raw and Adobe Photoshop is smooth. So it’s only a Lightroom issue and I think it could be fixed easily.

Otherwise Adobe will loose some of their subscribers.

@Bruno.
Are there any major difference for you using Capture One?
Is it possible to get a smilies Interface like LR?

The most important thing that I instantly felt was in Capture One a huge Fluid and smooth performance on my iMac. It runs perfect and editing (only some tests for minutes because I’m new to it) made really fun. That’s how LR should be too!!!!
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Bruno Guerreiro

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I haven’t tried CO12 on the iMac Pro but will do so in the next few weeks. Capture one has always been faster than lightroom but it may well be because it is a more recent application. It also doesn’t seem to have some of the modules and features available in Lightroom.

I find Lightroom a bit less slow with the latest 8.1 update but I’ve recently converted all my raw files to DNG. Maybe that helped a bit.

With regards to the interface, you can get Capture one looking exactly the same. I think they have a workspace called “migration” got those who come from Lightroom.
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Victoria Bampton - Lightroom Queen, Champion

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Many in the Lightroom teams are on vacation over the holidays, but I've flagged this thread for their attention in the new year, if no one gets here first.
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ChrisJMV

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I hope that you will have then some good news... I really need it working smooth on my iMac Pro :)
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Julian Manuszewski

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Unfortunately, this has been an issue since the iMac pro launched over a year ago and has as much to do with LR's dismal support of retina/4k+ displays.  The fact is, LR runs worlds better on my laptop compared to my 3-4x spec'd iMac pro.  
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Carlos Cardona

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Please give your Mac the "once over"! Run the free Onyx (https://www.titanium-software.fr/en/o...), reboot. (In Onyx just run everything in the Automation tab). Run Disk Warrior if you can ($120), (https://www.alsoft.com), reboot. If you can’t do Disk Warrior, at least run First Aid from Disk Utility. Also just doing a "Safe Boot" can clear out caches (restart, hold down shift until you see "Safe Boot" on the screen, then reboot normally.
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Simon Chen, Principal Computer Scientist

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Could you post your Lighgroom>Help>System Info...? What aspect of the Lightroom workflow that you experienced slowness? Have you updated to the more recent macOS 10.14.2? We've heard some Lightroom customer's report of performance slowdown after updating to macPS 10.14.
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ChrisJMV

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Chad Smith

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I just upgraded to a new PC from a 3.5 year old MBP (formerly top of the line). I migrated the catalog from a Thunderbolt array to the NVME M.2 SSD on board the PC. I have a brand new HP Zbook Stuido x360 with 32GB Ecc Ram, Xeon CPU and 1.5TB NVME SSD and an Nvidia P1000 GPU w/4GB ram.  Fresh install of W10. latest drivers installed. The only software installed is Adobe CC with LR Classic CC, LR CC, and PS CC.  Latest Camera Raw from Adobe and Sony RAW drivers.  I'm using the same. I'm using 3 different 64 or 128GB SD cards (latest 95MB U3 CL10 SD cards with the onboard reader).  I have been using the cards for the apst year without issue on the mbp.  Lightroom crashes on import. it shows no progress on importing photos. develop mode stalls out completely. Slideshow fails to render. I have optimized the catalogue. I copied the images from the memory cards to the pc and then tried to import. LR continued to crap out. I tried importing a single photo at a time and it wouldn't work. The settings I have on when importing are to rename the files, generate std sizeEd previewsand copy as DNG to an existing folder, along with some metadata. YES I also tried not to copy as DNG, I tried move. it also crapped out. ADD in place without renaming finally worked, but then it crapped out when I attempted to move files to the same folder within the catalog.   

I'm hovering between 6 and 10GB of ram being utilized.  I can transfer a 100GB ZIp file in a couple minutes between folders on the PC itself. I have run Cinebench and no issues. 

its got to be LR. 


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Simon Chen, Principal Computer Scientist

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I tried importing a single photo at a time and it wouldn't work. The settings I have on when importing are to rename the files, generate std sizeEd previewsand copy as DNG to an existing folder, along with some metadata. YES I also tried not to copy as DNG, I tried move. it also crapped out. ADD in place without renaming finally worked


It could be somehow related to renaming during import. Does it work without renaming involved during import? What renaming options that you are using? What is the OS and Lightroom UI language that you are using?
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Julian Manuszewski

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I've knocked and banged on every door possible, but still it goes on deaf ears.  LR has run abysmally slow on iMac Pro since launch.  So unusable, that I have to edit on my MacBook Pro.

Import dialog - breaks if launched more than once in a session.
Library module - sluggish at best.
Develop - brush tool times out and barely works, image to image load is slow, 1:1 zoom takes forever (regardless of previews built).

I pay hundreds of dollars a year to use this software professionally on a professional machine and the fact is, I spend most of my time troubleshooting or working around the applications faults and bugs.
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Julian Manuszewski

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I've knocked and banged on every door possible, but still it goes on deaf ears.  LR has run abysmally slow on iMac Pro since launch.  So unusable, that I have to edit on my MacBook Pro.

Import dialog - breaks if launched more than once in a session.
Library module - sluggish at best.
Develop - brush tool times out and barely works, image to image load is slow, 1:1 zoom takes forever (regardless of previews built).

I pay hundreds of dollars a year to use this software professionally on a professional machine and the fact is, I spend most of my time troubleshooting or working around the applications faults and bugs.
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Darren

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Can Adobe please provide an update as to whether or not we can expect this to be resolved? With the release of yet another update that crawls on the iMac Pro, it's getting a little ridiculous at this point.

Scrolling is delayed by seconds. Simply toggling to the app from another app takes seconds. Even putting the app in full screen causes multiple seconds before LR even responds.

We have been extremely patient in waiting for this well-documented performance issue to be resolved, and it is beyond frustrating to not have any idea as to whether or not this will ever be fixed.

If it is not possible, please tell us so we can move on to other software that will allow us to work productively. One way or another, it's time to be clear about this, and we would very much appreciate an official response.
(Edited)
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Gabriel

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I have upgraded to an iMac Pro a couple of months ago, and for me the experience was positive. Lightroom Classic runs much faster and smoother than on my old machine, especially when importing pictures and previewing presets. This even with both the catalogues and the cache files on an external SSD, not the internal one.

It's not like I don't feel that there is room for improvement, but it's a much better experience anyway.

As a quick test, I copied and generated 1:1 previews for a batch of 588 raw files (21 GB). On iMac Pro this took 16min10', versus 38 min on my old iMac.

If curious, here are the configurations of the 2 computers:

iMac Pro, 3.2 GHz Intel Xeon W, 64 GB RAM, Radeon Pro Vega 64 16 GB

iMac 27 (2017), Intel Core i7 4.2GHz, 24GB RAM, AMD Radeon Pro 580 8GB

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Darren

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Unfortunately, the same isn't the case for Lightroom CC (not Classic). While it's blazing fast on iOS devices, it's essentially unusable in its current state on iMac Pro.
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eliseo miciu

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I experienced the same. spent $7000 on an iMac pro, and LR run better on my old 2011. I can't believe Adobe don't care , may be it is a fight wit Apple... I don't know... I started using Capture One and I think the made me a favor, it is way better soft! the best quality I've ever seen from the raw files!!