Although I have been loitering around here for more than 15 yrs, I never posted until I faced this problem...
My machine that runs Ventura is an iMac - 27"/2017/4.2GHz- i7/64GB RAM
I have many external drives, ranging from 512GB to 6TB, with 6TB drives running lightroom libraries and mirrors.
I recently upgraded the machine to Ventura 13.4! And what a huge mistake it was!
MBP 2015 (i5/8GB) running Monterey reads my 6TB drives instantaneously
iMac 2012 (i7/32GB) running Catalina does the same
iMac Running Ventura 13.4 takes more than a minute to access the same drives.
Video editing with files on external USB drives is literally impossible, and that is something we have done since 2012 with USB - 3 external drives on mac and windows!
File format does not help either - 1 TB, ExFat drives are read very fast without a delay by the Ventura machine. The moment they go above 2TB, the machine seems to struggle even when the file format is Mac OS Journaled..
(Edited to add: I rechecked after posting and here's what I found. 1 TB ExFat drives appear straight away. The moment a folder is clicked the 'spinning wheel pops up and goes on for nearly a minute)
I'm typing this on 'Ventura', and just after this I'm going to make a Monterey USB disk and do clean installation of Monterey..
Apple is 'doing us' big time here. Next OS (14) will only be compatible with machines beyond 2019; and with this either deliberately made or deliberately ignored Ventura issue they are gonna force us to upgrade at least two years prior to we really have to....!!
What a shame!