I remember there was some lag with the screen as well. But I don't remember it freezing completely. I would look through the settings on the tv for picture and sound , I remember when I first used my fire stick I had a sound/picture issue and I had to adjust the settings on the stick as well I'm trying to remember what I did. Does your tv have DTS built in? I turned that off and it seemed to fix the issue, you should see it in your settings.