@Daan_Krol As I mentioned in my last thread, I discovered that the issue was caused by QoS (Quality of Service) being automatically enabled during the firmware update, with its "Total Bandwidth"...

Omg, after hours of troubleshooting—including factory resets and even upgrading the firmware again—I finally discovered the issue. The firmware update automatically enabled QoS (Quality of Service),...

Last night, I noticed a firmware update was available for my Deco X60 system via the Deco app. After successfully installing the update, my internet speed dropped drastically from the usual 300 Mbps...