New Sony a7R4, and a73 bodies and have been having issues on import. A few images import and then it hangs. The photo end location is established, the catalog is established >200k pictures. Using SD Cards in CalDigit TS3 Plus Dock. I also tried to copy files from SD Card to location folder and then import from there. It did hang up a few times. Catalog is on one Seagate external drive and the pictures are copied to a different larger 8TB external drive all connected to the same MacBook Pro. 16" -2019; 2.4GHz 8-Core Intel Core i9; 32GB 2667 MHz DDR4; AMD Radeon Pro 5500M 8 GB, Intel UHD Graphics 630 1536 MB; Running one external display in addition to the MBP display.