@P3R31R4 

Hello,

To better help you, please help to confirm the following information.

1. May I have the model number of your Deco devices? Would you please describe your network diagram in detail? How many Deco do you have? Are the Deco units connect to each other via wired or wireless? Do they on the same floor?

2. Please help to check what's the status of the LED on the Deco when the problem happens.

3. Do all of your clients disconnect to the Deco at the same time?

4. When you lose the internet connection, have you disconnected to the Wi-Fi name? 

5. How do you recover the internet connection? By reboot the Deco?

Thanks.