Macosx resolution on ultrawide displays

OSX el capitan with a external display, doesn’t enable more than full hd resolution

To fix that, I have tried many applications like SwitchResx and others, no one works. What have worked is to patch the IOREG with that awesome project: https://github.com/Floris497/mac-pixel-clock-patch-V2

Just follow the instructions and your resolution will appear on display settings.