Two things come to mind reading about your setup.
That may be where a device was added that is misbehaving. Simply becuase it needs another reset or it's just now by cooincidence, a faulty device. Also, I'm not having issues with it as I previously suspected, but some still suspect the Ecobee Integration. Might be worth removing and rebooting as a test. Expect performance delays for up to 5 minutes after reboot is my experience.
I'm an IT consultant and have seen my share of problem switches. I'm currently using a Cisco 8 port that would go nuts 10 minutes after plugging it in. I replaced the power adapter and it's been fine ever since.
This is great. You have good troubleshooting experience then. I've overlooked something I should have seen more times than I can count. That's why it's great to share the details of your setup and get the community helping you examine the facts. These guys have help me with big and small problems numerous times.
