I try to import about 5000 Photos on my Mac to Lightroom CC. But it stops at 70%. I tested it with a new empty catalog, with the same problem. Is there any solution?
Would suggest you to go to Lightroom Preferences > File handling > increase the camera raw cache size to higher end (70-80GB) and then, check.
Thank you, that was the solution. Is there a tipp for the best Size / Performance?
That depends upon the number of images you import.
Higher the number of images, higher should be the cache size though the limit is of 300GB.