I have just seen this for the first time and i found my way here by accident, as I ran "Fix common problems" and there was a comment about Tdarr, which I also have installed.
Server is on 6.9.2 and is always very stable as i generally dont touch it. Today I added a new physical nvme drive and moved some files/folders with bash. On completion of this task i noticed that /mnt/user was missing. I should also note that some of the folders moved where shares that Tdarr interacts
A reboot resolved the issue.
No squealing here.
First attempt with Swiss endpoint was left for 4+ hours, no connection established (same errors others have seen)
Second attempt, I changed to the sweden endpoint, 5 minutes later we are up and running.
I cant say its quicker, but I seem to be finding more torrent peers, but this could obviously be my imagination and/or torrent related