I just started my Roon Lifetime in December. This behavior occurs often from my mobile phone remote app for no apparent reason. I do know all my indicator lights on my NETGEAR xs708t 10gbe network switch that connects my 2 blade servers and my Raid10 array and backup Raid5 array to the network, blink in unison when this happens, but it’s not the switch as I’ve already had it swapped for a new one. Typically this behavior would indicate a loop or broadcast storm in the switch, but I know there’s no loop. Maybe a broadcast storm caused by Roon?
PS: As an aside, Roon not supporting jumbo frames is very odd and frustrating for the average end user to troubleshoot. I only isolated that issue through an educated guess after eliminating all other network related possibilities. This should at the very least be documented somewhere. Hopefully someone with this issue will Google and find this and it will help them.