5120x1440 isn’t 5K, it’s actually a million pixels less than 4K. I too am using 5120x1440, think I’m gonna stick with it as there are some issues if I were to go with a 55" 4K TV. One for example is my yoke/throttle/panels will block a good portion of the bottom of the screen. Then there’s the issue of having to put my speakers either in front of or behind the screen. Too many issues with my current desk setup so I’ll continue to enjoy super ultrawide.