Does length HDMI cable affect quality?
Are longer HDMI cables slower?
There is no difference between the cables on all 3 different units they were used. It doesn’t matter how long the cable is, it is the electronics in the TV that define the input lag value.
Does longer HDMI cable matter?
In theory, there is no real maximum length to how long an HDMI cable can be. But the longer your cable is, the more the type of HDMI cable you buy can have a real impact on the eventual quality of audio and video you hear and see at the other end.