I recently updated my 2019 MBP to Sequoia (15.0) and just processed a set of photos w/o issue.  I did AI masking on a number of photos but have not run any AI Denoise yet.  Fingers crossed that this bug is fixed.... ... View more

I hope it's fixed in 15, otherwise I doubt it will ever get fixed.  The 5500M was only used on two Intel MBP models that are now 5 years old with x86 OSX support headed to the EOL heap.  ... View more

@Lumigraphics- "I'm using a 2019 MacBook Pro with a 4GB AMD Radeon and haven't seen this since the 14.5 update. I just processed and enhanced 28 Canon RAW files and didn't have any issues. So this IS real (I've seen it) but its also intermittent and not affecting everyone." Yes, we get that, but it's a very nasty bug that affects the Adobe flagship AI features and disabling the GFX acceleration essentially cripples the system performance so for the people it does affect, it really hampers their workflow.  Hopefully Apple does an OS update w/updated driver soon.   ... View more

With GFX processing turned on, right now, it seems to be pretty consistent even with restarts, etc.  Spent an hour batch Denoising images and over half of them had artifacts so had to delete & denoise manually.   W/o gfx acceleration, the overall LR performance isn't great.  This is the first job I've done in a couple of months, so likely why I haven't seen it before. ... View more

Side note - Now that I've been toggling the GFX settings, it seems that the AI functions like masking and Denoise are non functional with the GFX turned off or on images affected by this bug.  I had run batch Denoise on a number of images and some turned out fine, others had random large white blocks on the Enhanced images and AI masks applied were removed from those photos.  This is a major pain in the butt.... ... View more

Having this same issue, Intel based Macbook, info below.  Problem does go away when GFX is turned off.  Hopefully this gets fixed soon!    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: 6,403.4MB / 8,176.0MB (78%) Real memory available to Lightroom: 65,536.0 MB Real memory used by Lightroom: 22,882.4 MB (34.9%) Virtual memory used by Lightroom: 77,061.9 MB Memory cache size: 3,223.1MB 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: 1749MB / 32767MB (5%) Camera Raw real memory: 1759MB / 65536MB (2%) Cache1: Final1- RAM:352.0MB, VRAM:0.0MB, Americana Night June 24-491.dng Final2- RAM:352.0MB, VRAM:0.0MB, Americana Night June 24-280.dng Preview3- RAM:17.0MB, VRAM:0.0MB, Americana Night June 24-59.dng Final4- RAM:352.0MB, VRAM:0.0MB, Americana Night June 24-255.dng NT- RAM:1,073.0MB, VRAM:0.0MB, Combined:1,073.0MB Cache2: m:3,223.1MB, n:1,072.2MB U-main: 154.0MB Standard Preview Size: 1440 pixels Displays: 1) 6016x3384 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: /Users/MichaelG/Pictures/Lightroom/Lightroom Catalog-2-2-v13-4.lrcat Settings Folder: /Users/MichaelG/Library/Application Support/Adobe/Lightroom Installed Plugins: 1) AdobeStock 2) Aperture/iPhoto Importer Plug-in 3) Flickr 4) Nikon Tether Plugin Config.lua flags:     ... View more