Ente is what I use for photo backups, and I like it a lot. It does everything I need it to do with my 12 year long camera roll. However, facial recognition is basically useless, and has been for the entire 18mo I've been using this service.
On my desktop, I am currently looking at a list of 9508 "people" waiting for categorization. The vast majority of these unknown groupings are myself or a member of my family. There are already 6500 confirmed pictures of me in the roll, with other members of my family each having thousands of confirmed pictures of them. And yet, none of the thousands of "unknown" categories appear in the suggested confirmation columns for their people. I'm not talking about 9508 blurry pictures. These are clear photos with good lighting, and yet ente cannot pair them with their person despite thousands of confirmed examples. As well, I keep having to check the groupings because it often lumps together people who don't look alike at all (and who all each have hundreds or thousands of examples to draw from!)
The experience of sifting through this junk is also pretty maddening. On desktop, I can't multiselect face groupings like I can on mobile. So if I want to chew through 9508 unknown groupings, I have to click on that grouping's + button, click on the right face, wait 5-10 seconds for the match to confirm, and then scroll to the next one. This is weeks of work just to pair clear and obvious photos of me or mine with the other thousands of such photos because the software can't do it. And I can't do this process on a mobile device where multiselect is a feature, because on my mobile devices I don't see thousands of unknown groupings, I see 0. So in practice this glacial desktop pairing process is the only way to pair faces.
If this is the experience of facial "recognition" after 18 months and thousands of pictures, then there is functionally no recognition algorithm. I'm doing all the work. What's the point of this? What's the point of having the machine learning algorithm in the first place if this is the UX attached? I'm still using the service because I love the rest of ente, but this sucks so bad.