My tv local cable service is streamed using the Fidelity Tv app. Internet is not an issue as I have 1gbps. All other tvs in the house stream the application at 1080p and even 4k where available. My Roku tv however will not stream any content on any channel in hd quality. Every channel is blurry and displaying minimum picture quality. No issues with speed, hardwired in, application works on all other platforms properly except Roku. What's the deal?