@Xbosch Hi, Thank you very much for your time and patience. Did the issue start recently? Are you able to connect the satellite S4 units via Ethernet cables to the Mesh system? For pure WiFi...

@Kevin2938472398 Hi, thank you very much for your time and patience. Did the speed loss happen to the satellite Deco S4 units only? How about the internet speed from the main Deco? - It is also...

@Cheeselord Hi, welcome to the community. Please refer to the following troubleshooting guide: Deco LAN speed is capped at 100m/s Thank you very much and best regards.

@gvpt Hi, nice to see you again. Please refer to the reply to the following post: https://community.tp-link.com/en/home/forum/topic/710818?replyId=1433082 Thank you very much and best regards.

@GDS9999999 Hi, welcome to the community. Deco doesn't support web UI configuration yet so the modification needs to be done via Deco APP. Deco APP also supports local login which means you should be...

@OneBiteAidan Welcome to the community and Thank you for the feedback. I'll note down your feedback first and check whether there will be more similar requests. Happy Halloween and best regards.