RTX 5070 stuck on "limited graphics acceleration" in LrC 15.2 — GPUDeviceEnabled: false, image processing greyed out

Question

ISSUE SUMMARYLightroom Classic 15.2 reports "limited graphics acceleration is enabled" in Preferences > Performance. The "Use GPU for image processing" and "Use GPU for export" checkboxes are permanently greyed out. This has persisted for at least 6 months across multiple LrC updates. The result is that AI masking (Select Subject, Select Sky, brush masks) is slow and bogs down, even though the system has more than adequate hardware.SYSTEM SPECS- OS: Windows 11 Business Edition 11.0.26200- CPU: 20 logical cores @ 3.8GHz- RAM: 64 GB- GPU: NVIDIA GeForce RTX 5070 (11 GB VRAM)- Driver: NVIDIA Studio Driver 595.79- LrC Version: 15.2 [202602111402-ec4112e8]- Camera Raw: 18.2 [2482]- Dual 4K monitors (3840x2160 x2)KEY SYMPTOMS FROM SYSTEM INFO- Graphics Processor Info shows: "Init State: GPU for Display supported by default"- "GPUDeviceEnabled: false" — full GPU image processing is NOT enabled- Dedicated GPU memory used by Lightroom: only 63.6 MB of 11,943 MB (0%)- "Use GPU for image processing" and "Use GPU for export" are greyed out in Preferences- Preferences > Performance shows: "limited graphics acceleration is enabled"STEPS TO REPRODUCE1. Open Lightroom Classic 15.2 on Windows 11 with RTX 5070 and Studio driver2. Go to Edit > Preferences > Performance3. Observe "limited graphics acceleration is enabled" message4. Note that "Use GPU for image processing" and "Use GPU for export" are greyed out5. Check Help > System Info — GPUDeviceEnabled shows falseFULL GPU SECTION FROM HELP > SYSTEM INFOGraphics Processor Info:DirectX: NVIDIA GeForce RTX 5070 (32.0.15.9579)Init State: GPU for Display supported by defaultUser Preference: GPU for Display EnabledEnable HDR in Library: OFFGPU for Preview Generation: On (S1_11)Adapter #1: Vendor: 10de | Device: 2f04 | Subsystem: 89e61043 | Revision: a1 | Video Memory: 11943Adapter #2: Vendor: 8086 | Device: 7d67 | Subsystem: d0001458 | Revision: 6 | Video Memory: 80Adapter #3: Vendor: 1414 | Device: 8c | Subsystem: 0 | Revision: 0 | Video Memory: 0GPUDeviceEnabled: falseOGLEnabled: trueGL_RENDERER: NVIDIA GeForce RTX 5070/PCIe/SSE2GL_VENDOR: NVIDIA CorporationGL_VERSION: 4.6.0 NVIDIA 595.79GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIADirect2DEnabled: falseWHAT I HAVE TRIED- Tested GPU Off, Display only, and Display+Processing modes — image processing option always greyed- Confirmed Windows Display Settings > Graphics forces Lightroom to High Performance / RTX 5070- Using NVIDIA Studio driver (not Game Ready)- Camera Raw GPU config file reset (renamed existing config)- Issue persists across multiple LrC updates over 6+ monthsExpected behavior: RTX 5070 with Studio driver on a fully spec-compliant system should show "full graphics acceleration is enabled" and allow GPU image processing to be enabled. Please investigate why GPUDeviceEnabled remains false for this GPU/driver combination.

johnrellis · Answer

[View this post in your web browser. It contains formatting and images that don't appear in email.]

GPUDeviceEnabled: false

This line is confusing and does not mean that LR’s use of the GPU is disabled. Rather, the line is added by the Dynamic Link Media Server package, an internal component used by many Adobe apps to manage video. The line indicates that DLMS isn’t using the GPU to decode video, but it has no bearing on how LR uses the GPU for image processing. In particular, it has no bearing on the other issues you’re observing.

Here’s the post from Adobe employee @Rikk Flohr_Photography explaining this (which hasn’t been migrated from the old forum yet):

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded