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sailkelli
Participant
January 23, 2026
Answered

Lightroom Classic–specific GPU acceleration rendering problem

  • January 23, 2026
  • 1 reply
  • 113 views

I’m experiencing a persistent GPU‑related UI rendering issue in Lightroom Classic that affects all catalogs and survives preference resets, cache clears, and full system restarts. The problem appears isolated to Lightroom’s GPU acceleration path rather than Windows or my hardware. I’ve included a concise summary of symptoms and all troubleshooting steps already completed so the issue can be escalated beyond basic support.

Lightroom Version:
Lightroom Classic 15.1.1
GPU:
NVIDIA GeForce RTX 4070 (driver 32.0.15.6094, 11.5 GB VRAM)
Operating System:
Windows 11, dual‑monitor setup (primary 4K display + secondary 1920×1200)

Issue Summary
Lightroom Classic’s Develop module has persistent UI rendering failures across all catalogs. Symptoms include:
• Missing hover icons (crop, mask, etc.)
• Missing disclosure triangles throughout the UI
• White halo/shadow around slider numbers
• Develop preview shrinks into the upper‑left corner when GPU acceleration is enabled
• Develop preview returns to normal when GPU acceleration is disabled
• Behavior is identical across all catalogs and persists after restarts

Troubleshooting Already Completed
• Full Lightroom preferences reset (Shift+Alt on launch)
• Cleared Lightroom cache
• Deleted workspace/panel‑state files
• Tested multiple catalogs (issue occurs in all)
• Full system shutdown and restart
• GPU ON/OFF testing (UI breaks with GPU ON; image displays normally with GPU OFF)
• Verified Windows display scaling and resolution settings
• Verified valid display modes for both monitors
• Device Manager shows no GPU errors
• DirectX diagnostics show no system‑level faults

What Has Been Ruled Out
• Catalog corruption
• Lightroom preference corruption
• Windows display scaling corruption
• EDID/monitor handshake issues
• GPU hardware failure (Windows reports normal operation)
• Missing or incorrect display modes
• System‑level DirectX faults

    Correct answer sailkelli

    I did that per your instructions... everything looks great. but no change in the fussy behaviors. hovering makes the icons disappear and unless i disable graphics acceleration the develop view pops to the upper lefthand corner and is about 1/4 the size of the window

    regular loupe view is full screen. it doesn't make a lot of sense.

     


    Resolution
    Lightroom’s UI glitches were caused by a Windows DPI override that had been applied to Lightroom. That override forced Lightroom into a fallback rendering mode that breaks the interface.
    Fix:
    Removed the override:
    Lightroom.exe → Properties → Compatibility → Change high DPI settings → turn OFF “Override high DPI scaling behavior.”
    After disabling it, Lightroom returned to normal and all UI issues disappeared. 

    I was trying to make my ui readable and didn't utilize the correct tool to increase the text size which is found in preferences!

    Thanks for helping and i have a nice new driver for my GPU now.

    1 reply

    Per Berntsen
    Community Expert
    Per BerntsenCommunity Expert
    Community Expert
    January 23, 2026

    Please go to Help > System info in LrC, click the Copy button and paste in a new reply.

    S
    sailkelliAuthor
    Participant
    January 23, 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: 28
    Processor speed: 3.4GHz
    SqLite Version: 3.36.0
    Adobe GSDK Version: 1.4.0.171

    CPU Utilisation: 0.0%
    Power Source: Plugged In
    Built-in memory: 65299.0 MB
    Dedicated GPU memory used by Lightroom: 202.8MB / 12012.0MB (1%)
    Real memory available to Lightroom: 65299.0 MB
    Real memory used by Lightroom: 7069.7 MB (10.8%)
    Virtual memory used by Lightroom: 8275.5 MB
    GDI objects count: 881
    USER objects count: 3040
    Process handles count: 3290
    Memory cache size: 9464.8MB
    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: 1585MB / 32649MB (4%)
    Camera Raw real memory: 1592MB / 65299MB (2%)

    Cache1:
    Final1- RAM:62.0MB, VRAM:94.0MB, 904114_10152730773885268_2548954_o.psd
    NT- RAM:62.0MB, VRAM:94.0MB, Combined:156.0MB

    Cache2:
    m:9464.8MB, n:22.3MB

    U-main: 154.0MB

    System DPI setting: 96 DPI
    Desktop composition enabled: Yes
    Standard Preview Size: 2576 pixels
    Displays: 1) 1920x1200, 2) 2560x1440
    Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

    Graphics Processor Info:
    DirectX: NVIDIA GeForce RTX 4070 (32.0.15.6094)
    Init State: GPU for Export supported by default
    User Preference: GPU for Image Processing Enabled
    Enable HDR in Library: OFF
    GPU for Preview Generation: Off (S5_11)

    Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic
    Library Path: C:\lightroom catalog here\Main Lr catalog-v13-4.lrcat
    Settings Folder: C:\Users\Kelli\AppData\Roaming\Adobe\Lightroom

    Installed Plugins:
    1) AdobeStock
    2) Flickr
    3) Topaz Photo (Studio)
    4) Topaz Photo AI

    Config.lua flags:

    Adapter #1: Vendor : 10de
    Device : 2786
    Subsystem : 88ed1043
    Revision : a1
    Video Memory : 12012
    Adapter #2: Vendor : 8086
    Device : a780
    Subsystem : d0001458
    Revision : 4
    Video Memory : 80
    Adapter #3: Vendor : 1414
    Device : 8c
    Subsystem : 0
    Revision : 0
    Video Memory : 0
    AudioDeviceIOBlockSize: 1024
    AudioDeviceName: System Default - Speakers (Realtek(R) Audio)
    AudioDeviceNumberOfChannels: 2
    AudioDeviceSampleRate: 48000
    Build: LR5x34
    Direct2DEnabled: false
    GL_ACCUM_ALPHA_BITS: 16
    GL_ACCUM_BLUE_BITS: 16
    GL_ACCUM_GREEN_BITS: 16
    GL_ACCUM_RED_BITS: 16
    GL_ALPHA_BITS: 0
    GL_BLUE_BITS: 8
    GL_DEPTH_BITS: 24
    GL_GREEN_BITS: 8
    GL_MAX_3D_TEXTURE_SIZE: 16384
    GL_MAX_TEXTURE_SIZE: 32768
    GL_MAX_TEXTURE_UNITS: 4
    GL_MAX_VIEWPORT_DIMS: 32768,32768
    GL_RED_BITS: 8
    GL_RENDERER: NVIDIA GeForce RTX 4070/PCIe/SSE2
    GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIA
    GL_STENCIL_BITS: 8
    GL_VENDOR: NVIDIA Corporation
    GL_VERSION: 4.6.0 NVIDIA 560.94
    GPUDeviceEnabled: false
    OGLEnabled: true
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    Per Berntsen
    Community Expert
    Per BerntsenCommunity Expert
    Community Expert
    January 23, 2026

    Adapter #2: Vendor : 8086
    Device : a780

     

    This an integrated GPU, Intel UHD Graphics. LrC doesn't work well with multiple GPUs, so try to disable it.

    Right click it in the device manager and choose Disable. Does that make any difference?

     

    GPU-disable.png

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