[SushiHippie]

Yes, this makes it at least usable, without it it is even worse.

But it is still worse compared to google photos/icloud photos/etc.

The issues I described above also happened with memories.

I think improving performance and memory usage in their webdav implementation would, by far, have the biggest impact.

Nextcloud is a fork of Owncloud, and Owncloud did the right thing to move away from php for the webdav implementation, though they are now rewriting it once again, which I don't really like, as they store the files and all information in some binary format.