Camera Raw requires GPU acceleration to edit photos.

Claire H. (Adobe Employee) mentioned you in a post! Join the conversation below:
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[Photoshop ecosystem Discussions]<> Re: Camera Raw requires GPU acceleration to edit photos.<>
Hi Michael@UofL<>, Let's try a few things to help you get back to a smooth workflow. I see you have checked the compatibility of your GPU and did all the preliminary steps to troubleshooting, so let's try these steps if you haven't already:
1. Update GPU Drivers: Even with a new GPU, outdated or incompatible drivers can cause this issue. Download the latest Studio Driver from Nvidia's website. Performing a clean install using Nvidia's custom install option.
2. Force Photoshop to Use the Dedicated GPU: If the system has integrated graphics, it might default to that. On Windows: Go to Settings > System > Display > Graphics Settings. Add Photoshop and set it to use the High-Performance GPU.
3. Reset Photoshop Preferences: Try manually resetting your Photoshop preferences: https://helpx.adobe.com/ie/photoshop/using/preferences.html#Manually
* Remember to back up your settings before doing the preference reset: https://helpx.adobe.com/ie/photoshop/using/preset-migration.html
4. Check for Background Conflicts: Sometimes a third-party apps or system overlays (e.g., screen recorders, GPU monitors) interfere with GPU detection. Disable or uninstall such apps temporarily, then reboot and test again.

If none of these steps work for you, can you please send us a few more details? Could you give us your system info and steps to reproduce? You can find your system info by going to Help > System Info, copying and pasting it into a text file, and attaching it here. Thanks! ^CH

Hi Claire,
Thanks for the suggestions!
1. I neglected to mention that I updated both the Intel and Nvidea graphics drivers as the first step.
I also waited for a Photoshop update, in case a bug was introduced and fixed on the next round.
2. In addition, I disabled the Intel graphics driver, so that the system was forced to use the Nvidea GPU.
I am not sure if it is relevant, but I noticed a recurring problem in the weeks before the GPU stopped being recognized by Camera Raw. The problem was that Photoshop would lock up (requiring a manual crash) whenever I tried to change both the image size and the image resolution (dpi) in the same step. I did not understand this problem, because I had plenty of video RAM, and the problem had not occurred before. I avoided that problem by making only one change at a time.
3. I followed your instructions to go to "Windows>Settings > System > Display > Graphics Settings. Add Photoshop and set it to use the High-Performance GPU. " I cliked up toggle labelled "Hardware-accelerated GPU settings, and then "Add desktop app". I manually added Photoshop but not Camera Raw (which also had the GPU issue).
That solved the problem. Thanks!
I am grateful for the solution, but curious. Why was that obscure setting suddenly needed after more than 2 years of Photoshop and Camera Raw functionality without it?
Michael