Before I share any gory details, has anybody had a problem with their enhanced remote staying paired with or not controlling their Roku device when it was paired and determined that the problem was with the Roku device itself and not the remote?
...I determined that the first Ultra I bought had defective wireless hardware as the remotes for both Ultras worked just fine with the second Ultra.
I've seen people say that the free Roku HDMI extender cable[/url:3iq22vjl] can sometimes help with possible EM interference from t...
Are you able to try the Streaming Stick+ on another TV to see if it exhibits the same problem.
Changing your wireless router to broadcast on a different channel could be something else to try...
Is there a reason to avoid using a fixed channel on a 5GHz network other than 161 (the one that Roku suggests)? I might try another channel to see if that has any effect.
It wouldn't hurt to try other fixed 5GHz channels. This link discusses which 5GHz channels are best to try. I use the free WiFi Analyzer app from the Windows 10 Microsoft store to see which channels are the least congested. Have you also tried using the 2.4Ghz band? Or is there just too much wifi congestion in your area?