Delay in seeing updates in develop

Question

Version 13.2  is running so slow it's unusable. If i do anything in develop mode I get the spinnig beach ball, or a super long delay befopre seeing the actions of what I'm doing.
 
For example, if I drag my exposure slider down, I click on it with my mouse to drag, but I don't physically see the slider move to the left unill about 6 seconds after the inital draging of my mouse.
Same with masks.  I can drag out a linerar gradient and it takes about 6 seconds befiore I see the mask appear.
 
How do I fix this?  What a bummer!
 
Chip: Mac M1 Max
Memory: 64 GB
macOS: Sonoma 14.1

Ian Lyons · Answer

Your GPU may have been locked off during a self test when upgraded to 13.2 or macOS updates. You can reset it by 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
On macOS, the user Library folder is hidden by default in macOS X 10.7 and later releases. Use the directions here.
3. Manually delete the Camera Raw GPU Config.txt file.

4. Relaunch Lightroom Classic.

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