L&LD
Part of the Furniture
I respect my neighbors, but I can't go around and tell them that you and you are going to use channel 1 and you going to set your router to channel 6 and the rest have to use channel 11. In real life this will never happen. New router will scale down from 40 to 20, but old ones will stay at 40 and pick the channels the router thinks is the best. I consciously picked my channel(#7) to minimize interference to channel 6 as people on it had the weakest signal. I was surprised that channel 7 worked better that channel 6. It shouldn't of, but it did.
This is all I'm saying.
What I see you're saying is you don't know what you're saying or you simply want to ignore what everyone else is trying to tell you.
Using channel 7 you are interfering with your neighbors on channels 6 and channel 11, just like RMerlin stated. You are helping no one but yourself.