@Tobev 

Hi, None of the online devices could display the speed on the overview page, right?

Can I have a picture of it and at the same time, could you please go to overview>settings on the top left>help>contact us>suggestions>send the APP log to us;

And if you enabled the high priority on the specific clients, would there be any speed index showing up?

Thank you very much.

@TP-Link Hi, thanks for responding!

That's correct, none of the devices show the speed correctly, they just show 0.0 all the time.

I don't have the high priority option as I'm using it in access point mode.

Screen shots are below and I've also sent them and the log via the app.

@Tobev 

Thank you very much for the update;

I have forwarded your case to the senior engineers already and please have a check of your email box.

@Tobev I had same problem and it was solved just removing and installing app Deco again