@David-TP Thanks for your reply. I switched port on both router and Deco, and switched cable and restarted. This fixed the wan port low speed, and doing a speed test confirmed that I'm back to old...

Since latest firmware upgrade I started getting the low WAN port speed warning, and the speed is only 94 Mbps even though I have 1 Gbps (all historic speed tests - last in April 2025 - have been at...