Any suggestions, ideas, other tuning options, a firmware update? I have read something about potentially trying the *guest* 2.4Ghz channel as an alternate to the main 2.4Ghz radio? Our guest networks...

I have an Archer C4000 TP-Link router that I purchased in May 2021. When I decided to purchase a new router, I did a considerable amount of research on different brands. I was familiar with TP-Link...