Inspiring

P: (Win) Lightroom v9.1 Luminance range with GPU acceleration is lagging

Forum|Forum|3 days ago
January 28, 2026
2 replies
38 views

When creating mask using luminance range, changing range is lagging (choppy performance) with GPU acceleration turned on. On CPU only it’s very smooth.

Please see attached video. You can also see CPU and GPU usage on it, and GPU is barely used (which makes sense, it’s just displaying simple 2D image with some colors).

Attaching dxdiag file. Drivers are newest, nothing else works in the background, games run crazy fast, the image is medium size JPG, not even heavy RAW.

GPU: 4070Ti.

DxDiag.txt

Sameer K

Community Manager

Hey, @GdzieJestStach. Thanks for including the details and sharing the System info. I can recreate this and have shared it with the team for review.

Thanks!
Sameer K

johnrellis

Legend

Drivers are newest
Card name: NVIDIA GeForce RTX 4070 Ti
Driver Version: 32.0.15.9159

That’s a slightly older Game Ready Driver from 12/18/25. Adobe and Nvidia recommend Studio drivers (which are just Game Ready drivers that get more testing with creative apps), and the latest Studio driver from 1/5/26 can be downloaded from here:

https://www.nvidia.com/en-us/drivers/details/260362/

If that doesn’t help, in LR do Help > System Info and copy/paste the entire output here.

GdzieJestStachAuthor

Inspiring

Installed Studio drivers, restarted, same effect.

This problem also appears when editing curves.

LR-sys.txt

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