Cropping in Camera Raw 12.3.0.493 extremely slow to the point of non-useability
Cropping in the new style Camera Raw 12.3.0.493 is extremely slow. It is so bad that I am unable to use it as part of my workflow. I've re-installed Camera Raw 12.2.1.417 and reverted back to Bridge 10.0.4.157 (as Bridge 10.1.0.163 was not Camera Raw 12.2 'aware'), and performance was back to normal - responsive and fine for my workflow. In both versions of Camera Raw my NVIDIA 540M graphics processor is not recognised (it is in Photoshop) so that is not the issue.

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Giulio commented
Camera raw 13.1.0.658 same exact situation! same computer, same function, DEGRADED performances!
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Cyrill Studer commented
Yes, so unusably slow! I can't use guides to correct perspective without Camera Raw slowing down, close to freeze.