Recommended Network Found now appears (streaming stick plus) whenever I check connection speed, which for me is fairly often. But it recommends a merely GOOD 5.0 GHZ connection which my TV cannot use, instead of an EXCELLENT 2.4 GHZ connection that I want to use and have always used. Can this new (to me) feature be bypassed via a setting, because it probably cannot be made smart enough to be useful? PLEASE?
There's no requirement for you to use the recommended network, and once you connect to your desired network it stays there. I've never seen a Roku with any pop up message suggesting I change the WiFi network I'm using. The Roku would have no way of knowing if the other network is even available for your use (it might be a neighbor), so it really can't make an accurate suggestion for that.
One reason it might be recommending the 5 GHz radio, despite it reporting a lower signal level, is that the 5 GHz band is less crowded, and even with a lower signal level it can stream at a higher and likely more reliable speed. In tests with my Ultra 4800, which is within five feet of my access point, I get close to double the speed on 5 GHz over 2.4 GHz.
