@John1234 Thanks and yep, it's the ethernet on the tvs. (And good idea on plugging the wifi in to check the speed - it is indeed green.) You would think brand new Sony TVs would be able to handle...

Total non-techie here, guessing I'm missing something basic. I just bought one of these gigabit switches for our new home which is wired with Cat 6 cable. I have internet from Xfinity coming into our...