Hey I'm going to be purchasing a TV to use as a monitor for my Mac pro. I do audio (sometimes scoring to picture) and I sit far away from the screen, so I want a 55inch TV to use for this purpose. I bought a Westinghouse 55inch TV from best buy, and the quality is really not great - though having a monitor of this size is fantastic. I want to return this tv and either get a vizio 1080 55 inch tv or a vizio 55inch 4k TV. I'm aware that I could only run the 4k TV at 30hz (right?). My question is... If I were to buy the 4k TV and wanted to use it in 1080 resolution (so I could have it at 60hz), would this work? Would there be any mouse-lag? There is a bit of lag on my Westinghouse which I would like to eliminate. Any knowledge in this arena is much appreciated (other brands, etc). Thanks!