So I have a Roku Express (I think). I have a 65" Vizio in my living room. It has 5 HDMI ports and will only play Roku on #2. While watching any live tv app, it will constantly jump back to the home screen. If I enter the app I was watching prior, it basically goes back to a few seconds before the exit on whatever show I was watching. I have a 32" Vizio from my kids room. The Roku never jumps to home screen on this tv. Any ideas?