http://www.avsforum.com/forum/40-oled-technology-flat-panels-general/2784185-2017-lg-c7-b7-owners-thread-no-price-talk-12.html#post51770641

I tested it out 1080p at 120hz. It works. Nice and fluid though I prefer to game at higher resolutions. I had it set to game mode and did not notice any lag.