This only started occurring this past Saturday, I have a Deco S4 mesh network set up in Access Point mode. We have a Gateway through our primary ISP downstairs which our hub S4 is connected to, then two Deco S4s upstairs. My computers and gaming consoles are connected to the Decos via Ethernet cable and starting Saturday I started getting lag spikes/stutter lag where once every 30 seconds or so my computer/consoles freeze for half a second then pick back up where they left off.

I've noticed no degradation of internet speed and the Decos aren't ever flashing red as if they're disconnecting. I've connected directly to my ISP's gateway and the issue goes away so it's an issue with the Decos themselves. I've swapped out the Decos upstairs with each other to see if an individual device were the issue and it hasn't resolved anything.

My firmware is up to date. It runs in 2.4 and 5 Ghz mode