Upgrading to 14.1.1 from the latest Ventura on my 2018 Mini i5 has been a train wreck.
A few of the big issues I've been seeing are:
• Time Machine not backing up on ext. HDD (Mac OS Extended Journaled format). Have tried disconnecting from the net, waiting for iCloud Drive sync to complete, turning off Apps Using iCloud Drive, etc.
• External drive/s unmounting randomly.
• Apps become unresponsive/failing
I'd love to go back to Ventura but can't do that easily with Time Machine. I'd have to clean install a Ventura OS and then Migrate Things over from Time Machine. My plan tentatively is to hope the drive indexes in the next few days and then hope Sonoma fixes those things in future updates. 😒