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[FirstMove]

Hello, 

I have a PC, which I bought last year in 2022, here are the key specs :
- AMD Ryzen 9 5950X

- RTX3070Ti 8 GB

- 64 GB RAM

- Samsung SSD 1TB M.2, where all software is installed. 

Before a few months, Lightroom started to be extremely slow, almost impossible to work on. 
I uninstalled it and tried to install it again, but no luck.

So we are talking here that when I apply some changes, for example, brightness, white balance etc, I must wait 15-20 seconds to see that change. And a brush tool is not even in real-time, so I make a movement with a mouse, and then I wait and see that mask is on parts where shouldn't be. But it's not that just LR is slow, the whole PC is very slow while LR is running. 

I am really frustrated. 

Do you have any advice?

[AxelMatt]

The first thing that you should try is to switch off the GPU support from the Lightroom preferences and check if that helps to fix the issue.

Go to Lightroom > Preferences > Performance tab > Uncheck "Use Graphics Processor" > Restart Lightroom.

https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-gpu.html

Another step is to try to reset the Lightroom preferences.

https://www.lightroomqueen.com/how-do-i-reset-lightrooms-preferences/

It's recommended to backup your preferences before you reset the preferences to the default settings:

https://helpx.adobe.com/lightroom-classic/kb/preference-file-and-other-file-locations.html

If this doesn't help we need more informations about your environment.

Is you system up-to-date? All updates and patches for the operating systems and applivcations are installed?

All recent drivers for your hardware devices installed, especially for your graphic card.

Please provide also a copy of your 'System Info'. This can be get from the LrC Help > System Info menu item.

There's a copy button in the System Info dialog. Press this button and paste the info into your next forum post.

[Ian Lyons]

Post your 'System Info' as this gives us a much an extended list of your computer specifications, drivers and whether the GPU is even functioning. You can obtian the information from the LrC Help > System Info menu item as shown in attached screenshot.

[FirstMove]

Thank you for your answers!

I was out of the city, so here is an update: 
Unchecking "Use Graphics Processor" and restarting LR Preferences didn't help.  

Here is my system info:

Lightroom Classic version: 12.5 [ 202308091523-68a7abd6 ]

License: Creative Cloud

Language setting: en

Operating system: Windows 10 - Business Edition

Version: 10.0.22621

Application architecture: x64

System architecture: x64

Logical processor count: 32

Processor speed: 3.4GHz

SqLite Version: 3.36.0

CPU Utilisation: 0.0%

Built-in memory: 65460.7 MB

Dedicated GPU memory used by Lightroom: 18.1MB / 8031.0MB (0%)

Real memory available to Lightroom: 65460.7 MB

Real memory used by Lightroom: 1112.0 MB (1.6%)

Virtual memory used by Lightroom: 1273.1 MB

GDI objects count: 690

USER objects count: 2199

Process handles count: 2300

Memory cache size: 367.8MB

Internal Camera Raw version: 15.5 [ 1595 ]

Maximum thread count used by Camera Raw: 5

Camera Raw SIMD optimization: SSE2,AVX,AVX2

Camera Raw virtual memory: 320MB / 32730MB (0%)

Camera Raw real memory: 323MB / 65460MB (0%)

System DPI setting: 168 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: NVIDIA GeForce RTX 3070 Ti (31.0.15.3699)

Init State: GPU for Export supported by default

User Preference: Off

Installed Plugins:

1) AdobeStock

2) Flickr

3) LogiOptions

4) Nikon Tether Plugin

 And I am using Windows 11 altought in LR System info says Windows 10.

[Ian Lyons]

First, I recommend that you switch the GPU back to Auto. This will ensure that LrC uses the GPU features that are fully supported. In your case that should mean that you achieve 'Full Acceleration'.

Second, the LogiOptions plugin is known to cause problems when used with Lightroom Classic. I recommend that you disable  it or better still remove it altogther.