My Roku closes my streaming apps and returns to the home screen, no matter which app/streaming service I'm using, after about 3-4 minutes. So I can't watch anything for more than ~3 minutes before I get shut out and have to reopen the app. I've tried resetting /restarting the Roku to no avail. It's incredibly frustrating. Should I just buy a new Roku stick for my tv? Or try a fire stick or something else? The roku remote, tv remote, and tv itself are all working normally.