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1 Message


70 Points

Sat, Feb 16, 2019 6:21 AM

Lightroom Classic: Why does it crash constantly & hog memory?

I have used LR for six years. The last year it's becoming nearly unusable at this point. I am continually having to quit the app or restart my computer or force quit LR. 

I will only have LR Classic CC open and out of 16 GB of ram I have 29.6 MB available... 


iMac (Retina 5K, 27-inch, 2017)

Processor 3.4 GHz Intel Core i5 

Graphics Radeon Pro 570 4096 MB

Lightroom Classic CC 8.2 Release

I have 350 GB of storage on my computer. I use externals for images and edit the photos in LR from the external drive. 

I have one large catalog. I remove anything that I do not edit or deliver to clients. I understand that having a larger catalog can cause LR to run slower however make it unusable? 

The previous studio I worked for (photo editor/ culling in LR) also had one large catalog, less ram, older iMac and did not have these issues I am having – however, this was a year ago.

I would love some help. As much as I love LR I am about to move on because I don't have the time to deal with all of this on a regular basis.




5.8K Messages


102.5K Points

2 years ago

Let's start with some basic troubleshooting ALD:

I'm particularly interested to know whether the preferences reset and/or fresh test catalog solve the issues you're seeing. If they do, it gives us a start on solving the problem on your normal catalog.

799 Messages


11.5K Points

2 years ago

Apart from Victoria’s suggestions, you might also give your Mac the "once over"! Run the free Onyx (, reboot. (In Onyx just select almost everything in the Automation tab-read what it does and deselect things you don’t want to do, Delete Cookies, etc.) Run Disk Warrior if you can ($120), (, 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.

Also try Memory Clean. There’s a free version to try, but I pay for the Extreme Clean and run it 5-10 times daily when I’m working in LR, 16GB of RAM is no longer ENOUGH! Even with that, I reboot daily for an even better clean! Waiting for new 64GB of RAM iMac this year!

12 Messages


306 Points

2 years ago

Recently I upgraded to Classic 8.2 and almost immediately started having frequent crashes.  I was getting pretty frustrated until I realized that at the same time I had turned on the option to use the graphics card for acceleration. After reading Victoria Bampton's fix-it check list in her response in this thread and resetting everything back to default the problem was solved. 

BTW - Lightroom grabs as much memory as it can so that it can give the best possible performance.  Too bad memory isn't cheap like it used to be.  On the other hand, back in the late 70's we paid $100,000 for a megabyte of slow RAM for an IBM mainframe and that was in 1970's dollars.

161 Messages


3.4K Points

2 years ago

It's terribly written software and Adobe either has no intention or no clue how to fix it. Anybody who tells you that it's a localized issue or asks you to submit a system diagnosis is only wasting your time more. 

BTW it has occurred to me that most of my posts or replies here could be considered trolling, but when I've been paying 15USD per month for the past several years (and $130 on previous releases since 2007 and much more $$$ on hardware), I, like you, expect results.

Adobe Administrator


14.9K Messages


285.7K Points

2 years ago

ALD, If you haven't done so already, please submit all Crash Reports along with your email address: I did a search and didn't see any crash logs submitted by you.

Sr. Product Manager, Adobe Digital Imaging