I have 3 XE75 decos installed. The operation mode is Wi-Fi Router. I used this setup for a couple of months and everything worked very smoothly. Just some days ago something weird started happening. Each couple of minutes one or both decos disconnect. I decided to try and put them in Access Point mode and this worked without interruption. I tried Access Point mode some time ago and the connection is just weaker than when I use Router mode, so I would prefer Router mode. I also tried deleting the whole network and creating is again, but this didn't work. I am really confused why this is happening. Can somoene help me? If you need other details, let me know. 

I added the topology of my home. Everything is connected with cables so the decos are connected directly to eachother. This topology has worked smoothly for months.

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