Adding to post by @Jao vdL . Your GP card is from 2014 and even with most recent drivers is unlikely to support the features required for optimal performance when using Denoise,. In fact, I see from your screenshot that the self test carried out during Lightroom launch has failed (see attached screenshot) thus disabling the GPU.
The following steps can be used to reset the GPU self test, but will likely fail again in future.
1. Quit Lightroom
2. Locate the Camera Raw GPU Config.txt file.
- (Windows) \Users\[user name]\AppData\Roaming\Adobe\CameraRaw\GPU\Adobe Photoshop Lightroom Classic\Camera Raw GPU Config.txt
On Windows, the AppData folder may be hidden. To view the hidden folder on Windows 10, open File Explorer and from the top menu bar, select View and enable the checkbox for hidden items in Show/hide section. For Windows 11 users, open File Explorer and from the top menu bar, select View > Show > Hidden items.
3. Manually delete the Camera Raw GPU Config.txt file.
4.Relaunch Lightroom.
Note: Camera Raw highlighted in 2 and 3 above is used by Lightroom Desktop and Classic for launch support tests and logs that are common with Camera Raw.