I bought a new 4k monitor because i have a 1070, i wanted to try it out now. It was this korean monitor to give it a go after hearing great reviews. http://www.ebay.com/itm/331754744755?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT Now maybe i'm just dumb, but i'm having an awfully hard time getting most games to go full screen. Whenever i hit it, they just go blank. Then i have to tab out and close it most of the time. Is there a setting i'm missing? Another thing is. Whenever i tab out from games. It'll go to "No signal" Same when booting up. I won't even see my BIOS screen. Once it finally gets a signal i'm already into the windows desktop. Could a shitty Display port cable cause that issue? The time it takes to connect to a signal.