It’s not your fault, but it is very likely that you’re using the wrong HDMI cord to plug that 4K Apple TV or PS4 Pro into your new TV. While you might have assumed that all HDMI cords are equal they are, unfortunately, not. And if you have the wrong cable, you could be missing out on the best features of your TV—or…
Source: Gizmodo – You Are Probably Using the Wrong HDMI Cord