I’ve seen a lot of recommends for Immich on here, so I have an idea what the answer here is going to be, but I’m looking for some comparisons between it and Photoprism I’m currently using Synology Photos, and I think my biggest issue is it’s lack of metadata management. I’ve gotten around that with MetaImage and NeoFinder. I’m considering moving to something not tied to the Synology environment.
It was around 10k-15k photos that the server stopped working well. I’m surprising syncing on Android worked well for you with 8k photos though, there are so many bug reports on Github with cases like mine where it just stops working with 2k photos. Not slow, but failing to sync at all.