I have an older model Vizio 27 inch LED TV that I am trying to use as a monitor connected with HDMI, but the text is very blurry. I have seen posts about editing the input name but don't know if my TV has that same capability. Does anyone know if this is a new feature on TVs, or perhaps simply a Samsung feature? About to go back to a regular monitor, because when I use RGB it blows everything up and looks like pre-school.