Hello guys,
I can confirm that there is an issue with the quality of service of the ESET Push Notification Service (EPNS).
The teams responsible are on it.
We apologize for the inconvenience caused,
Peter
For anyone else in the future who might have this issue and comes across this post:
After doing some poking around myself, I actually got to the bottom of this this morning. This issue was cause by having the "Removable Media Access" option checked under "Scan on" in the "Files system protection" settings.
After turning this off and rebooting, the system returned to normal operations.
From what I could gather, having this option selected meant that at boot, the entirety of my external Time Machine drive was being scanned silently. When Time machine then attempted to launch a backup at the same time, the combination of these simultaneous scans and backups ground the system to a halt. Checking my backup logs, none of my iterative backups had completed since I upgraded to 7.3.3700.0, which is when I selected this option "on", foolishly assuming it'd target USB thumbdrives and the like - That's on me. I ought to have recalled that external USB backup drives count as removable media.
Since turning this option off, the system is under less strain, scand is not out of control, and my backups are completing.