Yeah, I was assuming it was either that, but I do notice that "backup" takes a long time. As soon as backup is done it is on the order of 4-5 minutes. But then again, I store something like 5 TB worth of files on my Nextcloud, so it could be me as well to.
> I store something like 5 TB worth of files on my Nextcloud
Ah, that might be it.
IIRC there's a database entry for each file, if you've got a lot of files it might take a while since on upgrade it also run database migrations to adapt to the new schema, that might take a while.
In their defense, the software has grown a lot and does a lot more things nowadays, it's understandable that the upgrade process takes more.