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vladcrihan
Known Participant
January 21, 2026
Question

Lightroom Classic disables full GPU pipeline on AMD RX 6700 XT (GPU detected, but Direct2D & GPUDevi

  • January 21, 2026
  • 1 reply
  • 144 views

 

I’m experiencing a consistent GPU pipeline fallback in Lightroom Classic that I cannot resolve through settings, cache resets, or driver reinstalls.

System

  • Lightroom Classic: 15.1.1

  • OS: Windows 11 Business, build 26200

  • CPU: Ryzen 9 7900X

  • RAM: 64 GB DDR5

  • GPU: AMD Radeon RX 6700 XT (12 GB VRAM)

  • Driver: AMD Adrenalin 25.11.1 WHQL (also tested other WHQL versions)

  • Display: BenQ SW320, 4K @ 144% DPI, hardware-calibrated (ICC correctly assigned)

Symptoms

  • GPU is detected and VRAM is actively used (3–4 GB).

  • GPU is used for export and preview generation.

  • However, Develop UI is not fully GPU accelerated:

    • pan / zoom / sliders are not fully smooth

    • behavior matches CPU fallback mode

Lightroom System Info (relevant lines)

 

 
User Preference: GPU for Export enabled
GPUDeviceEnabled: false Direct2DEnabled: false
GPU for Preview Generation: On
 

This persists after:

  • forcing GPU usage (Custom → display + image processing enabled)

  • deleting all Lightroom caches

  • clean driver reinstall (DDU + Custom Install + Factory Reset)

  • verifying Windows Color Management (single correct ICC profile assigned)

Important notes

  • This is not a calibration issue (BenQ SW320 uses hardware LUT).

  • This is not a cache issue (fresh cache rebuilt).

  • This is not a detection issue (GPU is detected and used partially).

  • It appears Lightroom intentionally disables Direct2D and full GPUDeviceEnabled in this configuration.

Is there any other driver recommended? 

1 reply

V
vladcrihanAuthor
Known Participant
January 21, 2026
Lightroom Classic version: 15.1.1 [ 202601141538-a543b18a ]
License: Creative Cloud
Language setting: en
Operating system: Windows 11 - Business Edition
Version: 11.0.26200
Application architecture: x64
System architecture: x64
Logical processor count: 24
Processor speed: 4,7GHz
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.171
 
CPU Utilisation: 0,0%
Power Source: Plugged In
Built-in memory: 64672,5 MB
Dedicated GPU memory used by Lightroom: 3449,8MB / 12242,2MB (28%)
Real memory available to Lightroom: 64672,5 MB
Real memory used by Lightroom: 2144,6 MB (3,3%)
Virtual memory used by Lightroom: 5920,8 MB
GDI objects count: 1008
USER objects count: 2602
Process handles count: 3034
Memory cache size: 3798,3MB
Internal Camera Raw version: 18.1 [ 2420 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 793MB / 32336MB (2%)
Camera Raw real memory: 903MB / 64672MB (1%)
 
Cache1: 
Final1- RAM:376,0MB, VRAM:2333,0MB, DID03948.ARW
NT- RAM:376,0MB, VRAM:2333,0MB, Combined:2709,0MB
 
Cache2: 
m:3798,3MB, n:189,5MB
 
U-main: 90,0MB
 
System DPI setting: 144 DPI (high DPI mode)
Desktop composition enabled: Yes
Standard Preview Size: 3840 pixels
Displays: 1) 3840x2160
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No
 
Graphics Processor Info: 
DirectX: AMD Radeon RX 6700 XT (32.0.21033.3005)
Init State: GPU for Export supported by default
User Preference: GPU for Export enabled
Enable HDR in Library: OFF
GPU for Preview Generation: On (S5_11)
 
Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic
Library Path: E:\Cataloage\Printesa si broscoiul 2026\Printesa si broscoiul 2026.lrcat
Settings Folder: C:\Users\vladc\AppData\Roaming\Adobe\Lightroom
 
Installed Plugins: 
1) AdobeStock
2) Flickr
3) Lightroom to Exposure
 
Config.lua flags: 
 
Adapter #1: Vendor : 1002
Device : 73df
Subsystem : e361002
Revision : c1
Video Memory : 12242
Adapter #2: Vendor : 1002
Device : 164e
Subsystem : 88771043
Revision : c2
Video Memory : 1e5
Adapter #3: Vendor : 1414
Device : 8c
Subsystem : 0
Revision : 0
Video Memory : 0
AudioDeviceIOBlockSize: 1024
AudioDeviceName: System Default - Speakers (2- Pebble V3)
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 48000
Build: LR5x34
Direct2DEnabled: false
GL_ACCUM_ALPHA_BITS: 8
GL_ACCUM_BLUE_BITS: 8
GL_ACCUM_GREEN_BITS: 8
GL_ACCUM_RED_BITS: 8
GL_ALPHA_BITS: 8
GL_BLUE_BITS: 8
GL_DEPTH_BITS: 32
GL_GREEN_BITS: 8
GL_MAX_3D_TEXTURE_SIZE: 8192
GL_MAX_TEXTURE_SIZE: 16384
GL_MAX_TEXTURE_UNITS: 8
GL_MAX_VIEWPORT_DIMS: 16384,16384
GL_RED_BITS: 8
GL_RENDERER: AMD Radeon RX 6700 XT
GL_SHADING_LANGUAGE_VERSION: 4.60
GL_STENCIL_BITS: 8
GL_VENDOR: ATI Technologies Inc.
GL_VERSION: 4.6.0 Compatibility Profile Context 25.11.1.251104
GPUDeviceEnabled: false
OGLEnabled: true
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Noel Orridge
Community Manager
Noel OrridgeCommunity Manager
Community Manager
January 21, 2026

Hi @vladcrihan! Thank you for reaching out and sharing relevant details! I'm sorry to hear about your issue. Here are a few things to try/check to fix this issue (quit Lightroom Classic first and perform the steps below):

 

1) Try installing the latest Driver for your GPU, which was released recently: https://adobe.ly/4sRNt3m

2) Go to: \Users\[user name]\AppData\Roaming\Adobe\CameraRaw\GPU\Adobe Photoshop Lightroom Classic\Camera Raw GPU Config.txt and manually delete the Camera Raw GPU Config.txt file.

3) Right-click anywhere on the desktop and choose the AMD Catalyst Control Center or Configure Switchable Graphics. Click Browse and choose High Performance instead of Power Saving.

4) If you're using more than one graphics card in Windows, your high-end card might not be set as the primary card. To turn off the lesser of the two cards, use Windows Device Manager. In Device Manager, right-click the card's name, then choose Disable.

5) Try out the steps mentioned in this community post: Re: Set up GPU for high performance in Photoshop -... - Adobe Product Community - 13504734

6) Go to System > Display > Graphics and toggle OFF Hardware Accelerated GPU Scheduling.

 

Hope this improves the situation.

Noel
V
vladcrihanAuthor
Known Participant
January 21, 2026

Thank you for the detailed response. I’ve now completed all recommended troubleshooting steps and wanted to share the results for clarity.

System context:

  • Windows 11 (latest build)

  • AMD Ryzen 9 7900X

  • AMD Radeon RX 6700 XT (single active GPU, iGPU disabled in BIOS)

  • Latest Adobe-recommended AMD driver installed

Steps already performed:

Clean GPU driver reinstall (Adobe-recommended version, not Windows Update).

Deleted  Camera Raw GPU Config.txt to force GPU re-detection

Explicitly set Lightroom Classic to High Performance in Windows Graphics settings and AMD Adrenalin.

Hardware Accelerated GPU Scheduling tested both ON and OFF (currently OFF).

Confirmed only the RX 6700 XT is active (no secondary GPU conflicts).

Current Lightroom Classic System Info results:

  • GPU is correctly detected and actively used (VRAM usage confirmed).

  • GPU for Preview Generation: ON

  • GPU for Export: Enabled

  • DirectX is active.

  • However:

GPUDeviceEnabled: false

Direct2DEnabled: false

This indicates that while GPU compute and export acceleration are working, the full GPU UI/display pipeline remains disabled, resulting in reduced UI responsiveness (Develop sliders, pan/zoom).

From testing and comparison, this appears to be a known limitation or intentional fallback in Lightroom Classic on Windows when using AMD RDNA2 (RX 6000-series) GPUs, rather than a misconfiguration or driver installation issue.

At this point, I don’t believe there are further end-user configuration steps available. I’m sharing this to confirm:

  • whether this behavior is expected on RDNA2 hardware, and

  • whether there are any plans to enable full DirectX/Direct2D UI acceleration for these GPUs in future Lightroom Classic updates.

Thanks for the support and for confirming.

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