Manfred...
I am posting this in a new string rather that hijacking Grahame's posting...
I have not experienced any appreciable slow-down in processing my 24 MG Sony A7iii or A6600 files when working in ACR...
However, as per your quote, how do you make the corrections to one image and then copy these corrections to additional images?
Since I often shoot relatively large numbers of dog portraits under controlled studio-like conditions, I often need to make slight changes over all of these images.
I would like to experiment with making the corrections to one image and then copying those corrections o other images in the set and see if it speeds up my PP...
Thanks,
Richard