My 3800x streaming stick will not detect anything above a 1080p when I do auto detect. I plugged my fire TV stick into the same HDMI port and it plays 4K just fine. why won't the 3800x detect the 4K resolution on my TV? And before you ask, yes it is a 4K TV and like I said the Amazon fire TV stick plays 4K just fine on the same TV. it's not the TV it's the Roku stick and I cannot make it detect anything above a 1080p.