Intermittent flickering for Route10 and Switch S8 ports and traffic annotation (on-premises h/w Control UI)

Reporting some strange behaviour on the On-premises hosted hardware Control UI (on 1.1c) for the Route10 (on 1.4f) and at least one Switch S8 (on 2.1u). The Port and Traffic intermittently changes between blank ports and proper ports, and port text annotations within the Traffic section changes between the port Name and the corresponding attached (Network) Device’s name. For a while it can change every second or so, and then maintain the correct info for a while, and then start over changing again. Not entirely sure if all three switches are affected or if only one (+Route 10).

Anyone else that has seen this?

I have tried a few things; impact from attaching through VPN, Control HW connected to Route10 directly or to downstream Switch S8 and Control powered by PoE or PSU. Problem still there.

But, I have finally narrowed this down to the EEE configuration for the S8 switches and Control HW attached to the Route 10 ports. I had them set to EEE On, but now trying Default, and have not seen the same issues since. So, if anyone else encounters this, have look at the EEE settings.

For now, and unless it reappears, I consider this solved.