P: (GPU) Develop/Edit view & Export artifacts after 14.4.1 Update (AMD-only) (affects Cr, LrC & LrD)

[hyund39164868]

Hi,

Since just now, I've been experiencing a weird bug / crash in Lightroom Classic (on a Mac), where ALL my photos suddenly are fully covered in artefacts in the Develop module.

(Screengrab from the Develop module in Lightroom Classic)

When I check the linked RAW + JPEG source files in Finder, they all seem ok (they don't look corrupted, nor show any artefacts here), meaning the issue is within Lightroom.

(Screengrab from the RAW source file in Finder)

When I export images out of Lightroom (with any setting, edited or even not edited), the artefacts are also present on the export files.

(Screengrab from the exported JPG image)

This problem started occuring soon after I applied the new AI noise reduction feature on just ONE (1) photo. 

I already tried:

• Closing and re-opening Lightroom
• Shutting down (fully), and restarting the computer after 1 minute
• Switching the GPU accelrator setting in Lightroom on/off

MY SPECS

• Lightroom Classic 13.0.1 - Build (202310121438-d2af310c)
• Macbook Pro 16" - 2019
• 2,3Ghz 8-core Intel Core i9
• AMD Radeon Pro 5500M 8GB 
• 32GB 2667MHz DDR4 memory
• OS Sonoma 14.4.1

Any help would be greatly appreciated, because this makes the whole software unusable....

Thank you!

[GoldingD]

And can you post in a reply a screenshot of your LrC /Preferences/Performance/

example:

(deleted as to save scroll space post author posting the data requested))

[Jonathan316]

Thanks! Here it all is!

Lightroom Classic version: 13.4 [ 202406181129-60d181b7 ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 14
Version: 14.5.0 [23F79]
Application architecture: x64
Logical processor count: 16
Processor speed: 2.4GHz
SqLite Version: 3.36.0
Power Source: Plugged In, 100%
Built-in memory: 65,536.0 MB
Dedicated GPU memory used by Lightroom: 2,220.1MB / 8,176.0MB (27%)
Real memory available to Lightroom: 65,536.0 MB
Real memory used by Lightroom: 14,859.5 MB (22.6%)
Virtual memory used by Lightroom: 63,713.1 MB
Memory cache size: 4,571.1MB
Internal Camera Raw version: 16.4 [ 1897 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 3784MB / 32767MB (11%)
Camera Raw real memory: 4123MB / 65536MB (6%)

Cache1:
Preview1- RAM:22.0MB, VRAM:0.0MB, _74A1051.CR3
Preview2- RAM:22.0MB, VRAM:0.0MB, _74A1050.CR3
Preview3- RAM:22.0MB, VRAM:0.0MB, _74A1059.CR3
Final4- RAM:2,118.0MB, VRAM:0.0MB, _74A1055.CR3
Final5- RAM:352.0MB, VRAM:0.0MB, _74A1054.CR3
Preview6- RAM:22.0MB, VRAM:0.0MB, _74A1052.CR3
Preview7- RAM:22.0MB, VRAM:0.0MB, _74A1058.CR3
Preview8- RAM:22.0MB, VRAM:0.0MB, _74A1060.CR3
Preview9- RAM:22.0MB, VRAM:0.0MB, _74A1053.CR3
Preview10- RAM:22.0MB, VRAM:0.0MB, _74A1057.CR3
Final11- RAM:352.0MB, VRAM:0.0MB, _74A1056.CR3
NT- RAM:2,998.0MB, VRAM:0.0MB, Combined:2,998.0MB

Cache2:
m:4,571.1MB, n:1,233.6MB

U-main: 95.0MB

Standard Preview Size: 3584 pixels
Displays: 1) 3584x2240

Graphics Processor Info:
Metal: AMD Radeon Pro 5500M
Init State: GPU for Export supported by default
User Preference: Off

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/JH G-DRIVE 5 TB RAW/Lightroom Files/JH LR Master Catalogue/JH LR Master Catalogue-v13-3.lrcat
Settings Folder: /Users/jonathanhillyer/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Flickr
4) Nikon Tether Plugin
5) Topaz Photo AI

Config.lua flags:

[GoldingD]

I see you have the Use GPU Off. That is a workaround other members with MACOS 14.5 and an AMD 5500M have had to take.  So no additional idea on that

I see you do not have the default value of 5 GB for Camera RAW, instead a better 10 GB. You might see if 20 GB speeds Develop up a bit. But it will not address crashes.

Apparently MACOS Sonoma 14.6 is out. No idea if it fixes any GPU driver. Some indication in other members postings that it did not help them.

Also:

Library Path: /Volumes/JH G-DRIVE 5 TB RAW/Lightroom Files/JH LR Master Catalogue/JH LR Master Catalogue-v13-3.lrcat

So probably a SanDisk Professional 5TB G-DRIVE with a USC-C port? On your MAC, do you have and are you using an actual USB-C port (or perhaps Thunderbolt) and a proper USB-C data cable? Any issues with that external hard drive? I assume that particular drive came already format for MACOS, so you would not have changed that to say exFAT  (unless you needed cross platform support)

[johnrellis]

@GoldingD: "Apparently MACOS Sonoma 14.6 is out. No idea if it fixes any GPU driver. "

Initial reports are that 14.6 does not fix the issues with the AMD Radeon 5000-series GPUs.

[johnrellis]

@Jonathan316: "This is particularly true if I try to use the mask tool or the lens blur tool."

While setting Preferences > Performance > Use Graphics Processor to Off could help with some of your symptoms, it won't help problems with AI masking or Lens Blur. Adobe in its wisdom refuses to have LR's AI commands obey the setting of that option.

[johnrellis]

Moderators, @Rikk Flohr: Photography, please merge with the existing FAQ:

https://community.adobe.com/t5/lightroom-classic-bugs/p-gpu-develop-edit-view-amp-export-artifacts-a...

[Lumigraphics]

I use a similar Intel MacBook Pro at work and its plenty fast, although the CPU and Radeon are aging, they still hold their own. Switching to Apple Silicon is going to be the next best move, my (much cheaper) M1 Mac mini at home is quite a bit faster.