@Johnluan 

Good day,

Thank you very much for your time and patience.

Really sorry for the inconvenience.

You might need to contact the local shop retailer to return the Deco unit.

 And if you would like to spend more time, we would be happy to check if there is any other suggestion;

Would you please help me check the following information:

1. How are the Decos connected to each other? Wirelessly or Ethernet connection? Different floors?

2. How far away between each Decos?

3.Are you able to run cables between each Decos to test the stability as well as the speed?

Thank you very much for your understanding and support.

@Johnluan 

Yes, Sorry for the delay.

We would like to follow up on your case by email and please have a check of your email box later.

At the same time, when you connect then via Ethernet cable, would the instability get improved?

Would any Deco become red when the connection dropped out?

What are the status of the satellite Decos and client and are they online or offline on the Deco APP?

Thanks a lot for your understanding and support.