I Bought a Vizio E70-F3 to use as another Display to play games on while sitting on my couch. I bought this one Because it said it was a 120hz. Well the highest refresh rate i can set it to is 60z, and thats only in 1080p and 4k. Cant even set it to 60hz in 1440p. So i look at the box again and it says 120hz effective refresh rate using backlight scanning. Can someone please explain to me what the **** is effective refresh rate and backlight scanning. Sorry for the language, but i am not to happy at the moment with this purchase because i feel that i got duped by false advertising.