Adobe lightroom classic "denoise" troubles

[Jan Jurgensen]

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This mail may only be of interest for those who use Adobe lightroom on a MicroSoft type pc.

I am using a 2 years old pc, The MS software is fully up to date just like the Adobe software.

A few months ago Adobe released the "denoise" function under lightroom "develop" and "details". Denoise does a very good job of cleaning up phptographs taken in poor light and high ISO.

I used it right from the beginning.

Then followed a time when new versions of lightroom arrived monthly and were duly installed.

Yesterday I processed a number of pictures in lightroom - and trying to fix the high ISO pictures with denoise.

This time, denoise ran ok, but upon completion the pc crashed issuing awfull messages about the gravity of the error.

Each time, I had to reboot the pc 4 times in order to get running again. I could replicate the problem. Not funny.

Today, I opened the "preferences" part of lightroom - and then "performance". Here I opened "camera raw" and turned the "use graphics processor" off.

Apparantly it did the trick. I can now use denoise again - and the pc does not seem to run slower that before.

 

I should be most interested in hearing from other who have the same experience.

Jan J

[LocalHero1953]

I have a PC built in 2020 with an AMD CPU, a RT2080 GPU and plenty of RAM. I use denoise a lot, in batch editing, but I haven’t had your exact problems. 

What often happens is that after editing Lightroom starts slowing up and will eventually crash, owing to more and more RAM being consumed. (Adobe has always had problems with RAM leaks like this, which they occasionally fix, but also it occasionally comes back). I have learned to shut down Lightroom after a batch denoise edit and restart, which avoids this problem.  I don’t attribute it to denoise specifically as there same thing occasionally happens at other times eg after batch syncing of AI masks. 

Rightly or wrongly I have put it down to Adobe struggling to manage my ongoing editing processes while simultaneously updating previews and saving complex edits and metadata to file. As others have suggested it may also be linked to Adobe running out of space in a swap file/ scratch disk. 

Edited February 18, 2024 by LocalHero1953

[250swb]

Something similar happens on my pc with Nik Suite which I do most of my post processing with. After maybe three or four complex photo edits eventually one will freeze the process when it's being sent back into Photoshop. A lot of processing is going on at this point so I assume it's a RAM issue despite there being plenty available theoretically. It doesn't always happen but if I remember to close Photoshop pre-emptively and open it again it seems to unbung the problem. I also have ticked 'use graphics processor' so I'll turn that off and see what happens.

[Jan Jurgensen]

Thanks for replies from LocalHero and 250swb.

Yes, lightroom itself can crash after some kind of stress. I have experienced this after doing a mass delete. When I photograph, I often take 4-5 shots at the time. Therefore, the first action when opening lightroom for postprocessing is finding the best shots and deleting the other shots. That is quick work - but apparantly lightroom piles up all those big deleted DNGs and therefore crashes. But that is not a problem, a simple restart of lightroom will fix the problem.

The  denoise problem is much worse. Here both lightroom and computer crash. One restart will not fix the problem. One has to do 4 restarts. MS maintains a simple dialogue during the process, so there can be no doubt.

[jaapv]

This appears to be a general Windows 11 problem: 

https://answers.microsoft.com/en-us/windows/forum/all/windows-11-has-extremely-high-ram-usage/70bb5964-794e-44d4-ab73-7ab9f84df0b8

https://windowsreport.com/does-windows-11-consume-more-ram/#:~:text=One of the biggest changes,more RAM than its predecessor.

https://www.windowscentral.com/software-apps/windows-11/how-to-manage-virtual-memory-on-windows-11

The AI components in Lightroom do consume a lot of RAM.

[LocalHero1953]

For clarity, Lightroom has not crashed my computer as a result of these issues.
Credit where credit is due: I have never had corrupted files or lost edits as a result of Adobe RAM problems, though it always forgets where I was when it restarts - it goes back to where I was at the end of the the previous properly terminated session.

Edited February 19, 2024 by LocalHero1953

[Jan Jurgensen]

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Thank you Jaap for pointing to Win 11 requiring more RAM.

I will look further into the matter - and the possible ways around it.

Jan

[Luke_Miller]

I use a PC built by Puget Systems that is optimized for photo and UHD Video production.  With 64Gbytes on the motherboard and 24Gbytes in the graphics card I have trouble free operation.  Memory is inexpensive and avoids a lot of issues with inefficient memory hog programs and operating systems.