When I got the new cameras, I needed to get a new card reader as a result of the change of format. I researched this a little and bought what seemed to be a good reader. However, when I was downloading the shots, I have to say I was a bit disappointed. I know the cards were larger and the files were bigger but it seemed that it wasn’t any faster than I was used to. At some point, I thought to look at the USB C cable I was using. I had bought the cable for connecting my iPad and found that charging cable and fast data cables were not the same thing. I tried the cable that came with the camera and the downloads zipped along. I then bought a proper data cable and now the card reader is working like a charm. I am a bit embarrassed to admit that I hadn’t thought about this having already got a USB C cable but it made a big difference so don’t make the same mistake as me.