R7000 works well - Netflix still hangs

Thank you ntwrks and The Ether for your prompt and helpful advice. Upon returning home, I've had to deal with a failing computer and had to get a new Mac and transfer all my apps and files and deal with programs that won't say hello to me until I stroke their ego - will any of us live long enough to get a brain transplant that "thinks tech repairs and computer program reinstallments instead of having to deal with well-meaning but badly trained associates"?

Back to my issue, got the Samsumg TV a few months ago, so that was not an immediate factor, although it may have been a factor demanding more effort from my previous Arris router-modem; I was running everything on TiVo and had no problems with an earlier version of it and a 14 year old Sony TV. Problems started with the TiVo Roamio and the Samsung TV, still on an OTA connection. I will install the Netgear Genie when I get a chance, but meantime I did change the channel to 9, and Holy Mackerel: so far I've had no Netflix interruption for several days! Will also check your other suggestions if necessary.

I'm aware that there are bigger problems in this world than a Netflix transmission interruption, but my wife and I are grateful to the both of you and the entire community of "life users" for helping us take care of this one "life nuisance". "May you thrive and multiply!"

Ronny