In addition to @AxelMatt suggestion you may also need to reset the GPU Config test that LrC does each time the application is launched. You can do so using the following steps:
Quit Lightroom Classic.
Locate the Camera Raw GPU Config.txt file.
(macOS) /Users/[user name]/Library/Application Support/Adobe/CameraRaw/GPU/Adobe Photoshop Lightroom Classic/Camera Raw GPU Config.txt
(Windows) \Users\[user name]\AppData\Roaming\Adobe\CameraRaw\GPU\Adobe Photoshop Lightroom Classic\Camera Raw GPU Config.txt
On macOS, the user Library folder is hidden by default in macOS X 10.7 and later releases. Use the directions here. 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.
Manually delete the Camera Raw GPU Config.txt file.
Relaunch Lightroom Classic.
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