Moving the focus sliders in the Develop module causes the image to blur for the entire time I am making the adjustment, so I can't see the image clearly during the adjustment, only afterwards. This problem occurs on my new Mac; it didn't happen with my older Mac, which was identical to this one except, on the new one, I have more RAM (16 gig vs 8 gig). I'm running LR 5.7.
My cache is 50 gig. This happens whether I import the images setting Build Preview at 1:1 or at standard.
Has anyone else had this problem and found a way to fix it?
Thanks.