Comment by cdman

Who knows what the problem could be - if you want to invest time into this, you could try collecting some debug logs to see if it indicates anything. For me and my family it works pretty well (~300G of data across 10s of thousands of photos / videos). Face recognition / AI search works reasonably well. It's not perfect, but I'm happy to keep our photos under our control rather with some big tech company which could decide on a whim to erase all of my data (or even worse, report me to the police and then erase all of my data).

Of course I also dump all of the data about once per week on a NAS, just in case :)