I've got a Roku stick plugged into my smart tv. I have Sling TV, Amazon Prime Video, Watch ESPN, YouTube and Netflix as my streams. Everything is fine with all but Amazon Prime Video. With that I only get the video. All I can do is watch with closed captioning. Has anyone else had this problem, and if so, how did you solve it? Roku took 4 days to get back to me and tell me to dump Amazon Prime Video and then reinstall it, to no avail. Any constructive ideas would be appreciated. Thank you.