Wanted to make a post with a solution to a problem I had, in case anyone else runs into this as well.
I have three instances of this container running, along with one instance of the DelugeVPN container. Recently I noticed some time had gone by and none of the added torrents between any of the containers were ever uploading anything, even though they were all listed as seeding. When I checked the tracker status for each torrent, none of them could connect to the trackers and had the following error message:
Host not found (non-authoritative), try again later
The DelugeVPN container had a different but similar error message for every torrent. Researching the error messages, it looks to be a DNS issue.
The fix:
On the edit/update container page, Key 11 (Container Variable: NAME_SERVERS) has several different DNS servers added by default. I removed all of these, except for 1.1.1.1 and 1.0.0.1, applied changes and restarted the container. Everything works perfect now. Another bonus: for some reason the containers start up way faster now than they ever have in all the time I've been running these.