Hello @Skye-Kyou , Welcome to our community. What if you disable the QoS? Will the ping also suddenly go high when another client is downloading? What is the client? If the device is removed or not...

Hello @gudejinchou , Thanks for getting back to us. Please Disconnect all devices for comparison: • Unplug all Ethernet cables attached to the router • Change the Wi-Fi network name to something...

Hi @Luxus , Thank you for posting on the TP-Link community. We appreciate all your feedback and feature requests here. While we don't have any specific details to share, I'll make sure to log this...

Hello @Thomas1970 , Thank you for sharing your final solution, and I'm glad your problem was successfully resolved.

Hello @CosminN , Have you checked the same settings on a different router? The tech team has been made aware of your case; they will likely reach out to you via email to continue troubleshooting and...

@ShawnN , Have you tried 1.2.1 Beta? If you tried version 1.2.1 Beta and the QoS-related Bufferbloat anomaly was fixed, it means that the fix for this exception may not have been included in version...