Right. I mistakenly assumed you were on an Apple Silicon Mac. You're referring to this thread:
https://community.adobe.com/t5/ligh...-amd-only-affects-cr-lrc-amp-lrd/m-p/14563606
Mac OS 14.4.1 included a buggy graphics driver for the AMD 500- and 5000-series GPUs used in late-model Intel Macs. For most people, updating to Mac OS 15 5 months later resolved the issue -- presumably, AMD supplied a fixed graphics driver. But there were some for whom updating didn't help. I think most of those were experiencing problems with particular AI commands, not general editing in Develop as before.
The workaround for those on Mac OS 14 was to set Preferences > Performances > Use Graphics Processor to Off (and live with the slower performance). But this workaround didn't help those experiencing the glitches with AI commands, since Adobe inexplicably refuses to have the AI commands obey the setting of Use Graphics Processor.
Adobe does document a magic file you can place in the Camera Raw settings folder that it claims will stop the AI commands from using the GPU:
https://helpx.adobe.com/camera-raw/kb/acr-gpu-faq.html#lens-blur
The simpler AI commands like AI masking are slower without a GPU but not intolerably slow (e.g. 10 seconds instead of 2). But Denoise could take 30 minutes instead of 15 seconds. I haven't timed Distraction Removal without a GPU, but I supect it would take 5 or 10 minutes at least.
However, this magic-file backdoor broke soon after they announced it. I tested it just now, and it only appears to work for some AI commands (e.g. Subject) but not for Lens Blur or Distraction Removal.
So until/if Apple and AMD decide to fix the bugs in the AMD 500- and 5000-series driver, you're out of luck with your Intel Mac. Apple and AMD are the primary culprits here, but Adobe's refusal to have the AI commands obey Use Graphics Processor is just as frustrating, since it would be trivial to implement.