I have an iPad that often has very slow internet access over the deco network, while other devices in the same room are fine. 
In the app I can see that the iPad is connected to two device at the same time. I think that may explain the issues. 
 

the setup is as follows: router -> main deco (m5, upstairs) -> switch -> 3 deco's ( 2 m5, 1p9 ). The network is in access point mode. All decos have wired backlog. 
 

The deco's the iPad connects to are one m5 and one p9, both downstairs. 
 

I hope someone can help me with this.