@Mohaimin 

I'm using my deco M4 with 3 units at home but I'm experiencing severe channel interference. It's so bad I can't even do a teamsmeeting for my work anymore from home. I tried the optimization option in the deco app. After using it it tells me the network is great but it uses channel 36 and that's a crowded channel.

It seems that I can't change the wifi channels myself, so I guess I'm stuck with a useless product.

Is there a solution for this problem?