Downgraded kernel to 4.1.7-2 and enabled sickrage, couchpotato, plex and transmission last night, touch wood seems to be solid. I think the latest kernel is bad.
We're attempting to investigate, and oddly enough, replication has been hard at our end. However, this does appear tied to a possible regression upstream. They are aware, and addressing it (mainline Linux)
Core Developer Remember: Arch Linux ARM is entirelycommunity donation supported!