After investigating the issue further I actually don’t think the automatic pruning will help here.
The best solution for now is to manually delete the rows in the statistics_bandwidth table.
I’m working on looking at adding a database migration to do this on a PMS update, but if you feel comfortable doing it yourself then you can just run this command from the SQLite command line (see here on how to access this: https://support.plex.tv/articles/repair-a-corrupted-database/)
Always ensure PMS is not running when doing this.
delete from statistics_bandwidth where account_id is NULL;
then run:
VACUUM;
This may take a while, just be patient.
