@Lexivienna 

Hi, I am also eager for the new firmware Thank you for your time and patience so far.

But Frankly speaking, the new firmware of P9 is a little bit slower than other models.

I see you used Deco P7 before and the powerline performance is not expected in your network scenarios, have you considered using Deco M9 plus instead, the tri-band Deco Mesh?

Or before using any powerline Deco Mesh, Did you use any powerline adapters before, and are they working well as expected?

Thank you very much.

Best regards.

@Lexivienna 

Sorry to hear that your Deco P9 has the exact same issue with your Deco P7. When did you purchase your 6 Deco P9 and when did this issue get started?

May I have your current network topology? Have you noticed how often Ethernet backhaul does not work and which deco keeps doping connection？
If you could also provide me more information about your speed problem, I would appreciated.