If you're streaming, make sure you are connected with ethernet. Remember Wifi, both 2.4 and 5ghz is shared with microwave ovens, bluetooth devices, baby monitors, wireless keyboard and mice, game controllers, radio controlled toys, garage door openers and everyone else using wifi, including their security cameras, ring doorbells, etc etc. That's a LOT of noise taking place on the wireless frequencies, so any time you can connect via ethernet, do it! If the router is on another floor, look into powerline adapters. I used a dual style with both ethernet and wifi, so that my tv upstairs is connected via ethernet, and the wifi is setup as mesh using the same ssid and wpa key as the wifi router, so my other devices, cell phones, laptops, tablets and such connect to the best wifi, whether upstairs or downstairs,