sheldon

Reporting back with final fix/solution
 
During the Unraid upgrade to 6.12.6 something happened to the Plex docker and it updated itself to the BETA release branch instead of the STABLE release branch. I have Plex Pass so it makes sense that I technically have access to it but I never opted in, still my docker ended up going there and that's what has seemed to cause all my issues. When I tried to manually set a version by specifying a version through repository I ended up getting an orphan image and PLEX was completely gone
Well I downloaded Plex docker again and noticed repository went from linuxservers to lscr.io but I have no idea if that just was because it was an old docker pull previously. The new docker now pulls the latest stable release automatically instead of BETA. Anyhow, I have survived 2 full nights sine the rebuild and my CPU has been hurting for a full 24h to re-analyze all the media files (55TB takes a while), so I'm sure that CPU/RAM clocking is good or would have crashed during those analyzing times.
Long story short - Issue was a bad Plex docker taking the server down. Check your Plex console and logs to see what it's doing and what version you are running - if you ended up on the 1.40 branch you on the BETA and could explain random lockups.