Uhh… if your script is subbing to 24k remote communities, those will continue to grow from then on, unless you start purging communities at some point. After one user subscribes to a community, all new content gets indexed and stored on your instance. Pict-rs can cache images short term (and eventually clear them out), but Postgres will start growing very quickly and never slow down until it fills up disks.
UI doesn’t come up until database migrations fully complete. Can take half an hour or more depending on how much content is indexed in your instance.