Flickering when using Lightroom on Windows

[ckeck12]

Just started using Lightroom after a few years away and I'm running into a major issue on my primary editing machine. No issues on Mac OS (MacBook Pro) or iPad/iPhone, but whenever I load up Lightroom on my Windows computer, there is a constant flicker/pulse in the dark areas of the screen (constant), and when switching images in the library. It's similar to a PWM flicker if I had to describe it, but only in certain areas of the app. Navigating in the app also feels really slow/lagged. I'm certain it has something to do with GPU/hardware acceleration, but all changes to those settings and/or drivers make zero difference.

I have tried the following:

• disabled GPU acceleration
• reenabled GPU acceleration
• rebooted
• installed all Windows updates
• rolled back the current Nvidia driver
• switched to the Nvidia studio driver
• performed a clean install of Lightroom

Nothing has made any difference. System info is pasted below for reference.

Lightroom version: 8.0 x64 [ 20241003-1027-def78b5 ] (Oct  3 2024)
NGL Version: 1.39.0.9
WF Version: 7.0 f8231de
VF Version: 1.0.150
HIL Version: 40501
CAI Version: adobe_c2pa/0.9.3 c2pa-rs/0.31.0
PH Version: 5.0

Operating system: Windows 11
OS Version: Windows 11 Pro (2009)
Application architecture: x64
System architecture: x64
Computer model: ASUS System Product Name / AMD Ryzen 7 7800X3D 8-Core Processor           
Logical processor count: 16
Processor speed: 4.2 GHz
Built-in memory: 64650.4 MB
Real memory available to Lightroom: 64650.4 MB
Real memory used by Lightroom: 438.7 MB (0.6%)
Virtual memory used by Lightroom: 430.8 MB
Memory cache size: 0.0 MB

Internal Camera Raw version: 17.0 [ 2043 ]
Maximum thread count used by Camera Raw: 9
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 0MB / 32325MB (0%)

Displays: 1) 3440x1440, 2) 2560x1440
System DPI setting: 96 DPI
Dark Mode: No
Desktop composition enabled: Yes
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 4080 (32.0.15.6636) - 15.5 GB
Graphics Processor Detail: loaded: Yes, supported: Yes, compute: Yes, init: I4_GPU4, hard: success, soft: success, al: Yes, dl: No
OS Media Capability: true

Application Folder: C:\Program Files\Adobe\Adobe Lightroom CC
Settings Folder: C:\Users\User\AppData\Roaming\Adobe\Lightroom CC
Library Folder: C:\Users\User\AppData\Local\Adobe\Lightroom CC\Data

[Sameer K · Accepted solution]

Hey, @ckeck12. Welcome to the Lightroom Community. I'll help you figure this out. 

Check if your monitors support Nvidia G-sync and if it is correctly set up in Nvidia Control panel. You can toggle the G-sync and check if that helps. 

The AMD 7800x3D has integrated graphics. Are both of the monitors connected through the Nvidia GPU? 

Thanks!
Sameer K

(Type '@' and type my name to mention me when you reply)

[Esukken]

Thank you @Sameer K , turning of Nvidia G-sync solved the exact same problem for me.