Thank you for your question
The intel HD Graphics 6000 should be able to support your LG uk850w at a resolution of “DP 1.2/eDP 1.3 (max. 3840 x 2160 @ 60 Hz) or HDMI 1.4a (max. 3840 x 2160 @ 24 Hz)”.
May i ask what cable you are using? some cables are not able to put through 3840×2160 @60hz however this might be rare i would like to rule out the limitation of the cable. If this does not work i would advise you to do a firmware upgrade on the CAC-1170, see link below:
Latest available Firmware is “V7.61 or 0.61”:
Hereby Latest available firmware for CAC-1070 / CAC-1170.
Hereby the dropbox link to the latest available firmware called “0x61” (or V7.61) and the update procedure.
When running the update, connect adapter to system and screen to adapter and turn on.
Just copy onto desktop and run as administrator.
The updater program does not work on MAC OSx, so updating Firmware needs to be done on WIN or Bootcamp system.
For additional questions or information you can also contact [email protected]