Hello guys,
I'm reaching you with the following question.
I've got a not big apartment(about 100 square meters) and have two Archer C6 routers - one at the living room(at the one side of the apartment) and one at one of the bedrooms(at the other side of the apartment). I made their settings as follows:

Primary router 2.4GHz settings

Primary router 5GHz settings:

Secondary router 2.4GHz settings:

Secondary router 5GHz settings:

They are using the same passwords.

On the other hand I am connecting the two routers LAN to LAN.

The problem is that when I move from room to room it looks like the network switching is working fine but for some reason the internet is kind of stuck. Has to disable the device wifi and enable it again. Then no problems. Tried to make the secondary router operate as an AP but it's the same. Tried to turn the Smart connect for both the routers but it's the same.

I have another more minor problem. When only one of the routers is turned on and I'm let's say 20m from it with closed doors it looks like the internet stops. Is this normal?

Thanks in advance for the responses! I'm ready to apply more screenshot from the settings if needed.