f possible, connect mesh routers together with Ethernet cable or fiber backhaul runs for best performance.
I'm curious why connecting 'mesh routers together with ethernet cable' vs. the ethernet cable directly from my router in the study is going to provide improvements. Can you elaborate on this point if you don't mind?
BTW, I use a Google Nest Wifi mesh system and tried it in my media room, but I didn't feel it provided any improvement, so I went back to regular ethernet the way it was. I agree with you about the benefits of fiber optics, but as I said earlier, given the over 200 foot distance and other reasons, it is not feasible to run a long fiber cable at the moment. But that is something I might consider down the line for sure.
Also, I own an SGC opticalModule Deluxe that I'n using with my opticalRendu in my study. This setup used to be in the media room before I got the Innuos Zenith MK3 and Eno filter. Initially, I didn't feel that the Zenith + Eno combo was better than opticalRendu. But I kid you not, after putting over 50 hours on the Zenith, it has far surpassed the opticalRendu. My main system has never sounded this good.