Yeah I finally had to bite the bullet and replace my cheesegrater Mac Pro when I could no longer keep it current enough to handle the OS updates. Don't recall having the artifact issue, though.

On 2/5/24 2:20 PM, Larry Colen wrote:
https://community.adobe.com/t5/lightroom-classic-discussions/p-colored-quot-pixel-quot-artifacts-subdued-blacks-in-shadow-areas-older-macs-also-visible-on-cr/m-p/14401612/page/15#M355481

It turns out that the GPU in my trashcan mac is no longer supported, and GPU 
acceleration causes weird artifacts to happen in develop mode.  If anyone else 
runs into this problem try turning off GPU acceleration.

Meanwhile, I guess it's time to start a casual search for a good used Apple 
Silicon machine.

--
Larry Colen
l...@red4est.com  sent from ret13est



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