to a Roku Ultra and then upgrading the standard HDMI cable to a premium 4k hdmi cable provide a noticeable picture quality upgrade or is it a waste of money? I have an LG C2 and am streaming tv through the Direct tv app on the Roku device and have noticed a picture quality difference between shows I watch on the Roku and watching things on the LG tv apps. Unfortunately LG does not offer the direct tv steam app for some unknown reason
