Recently I added a couple TV shows to my TUBI-TV shortlist and when I try to play them they'll play for a few seconds, buffer, may give a computer feedback noise, then reboot. If I try it again, same thing happens. I read another support thread where people got no answers from Support but were told to try new HDMI cables, new USB cables, plugging into the router and/or rebooting the router, and plugging the power into the wall instead of the TV's USB for power, or doing a Factory Reset of the Roku 3. I haven't tried any of those options. Luckily I found one tip that allowed me to continue watching the TV show.
Clear the Roku’s cache. On your Roku remote, press Home five times, Up once, Rewind two times, and Fast Forward two times to clear the Roku’s cache. It can take several minutes to half an hour to complete.
