Another +1 for migrating to Immich.

Somebody in my family who generally doesn't pay that much attention to prompts and modals was repeatedly telling me their Gmail doesn't work because it's full and - surprize - it was because Google Photos was harassing them with the backup prompt, which in a hurry, they just re-activated every time I turned it off.

After a while and much convincing (and changing Immich to be the default gallery app), we're pretty happy. Immich has been very good, it's fast enough to not be bothering, and running it on TrueNAS has been quite hands-off. I have a mirrored 6TB drive and do off-site backups to a Hetzner storage box.

Previously we were using OneDrive and the Photos archiving was horribly slow for everything but the most recent months. It was literally unusable beyond a certain date, with the UI locking up, tabs crashing, huge amounts of memory consumed by the open tab, etc. The mobile app was only marginally better, but still very slow. Immich doesn't have this problem. I scroll back years of photos and they load almost instantly from HDDs.