Problems Diplaying 4k@60Hz on work computer

[DanielAlmeida]

Hello, 

I Bought a new monitor to work from home, a 4k monitor, but on my work computer (where I intend to use most of the time) I can only achieve 4k@30hz. its tiring to the eye, so I usually use 1440p@60hz (but since it is not the panels native res its kinda blurry).

My notebook's product name (got with WMIC CSPRODUCT GET NAME) is 20LES4P728, or a Lenovo Thinkpad X1 Yoga 3rd Gen. I understood that its embedded HDMI port is only capable of 4k@30hz (probably 1.4) - and only after I had already bought the monitor, but then I bought a Dell DA300 that is a usb-c dongle that is capable of 4k@60Hz. I Tested it with my macbook pro, and it did display the resolution and refresh rate as expected using the dongle. But on my work Pc it doesnt. the notebook product manual says that if outputting from the usb-c/thunderbolt 3 ports, it should be able to output 4k@60hz, but it doesnt. and when I tried using CRU (Custom Resolution Utility Tool), after the restart/restart64.exe it still outputs at 4k@30hz.

I thought about maybe buying a dock, but since every piece of equipment I have is supposed to be compatible with 4k@60hz I am kinda afraid to buy something that might not work (and be very expensive). Any ideas? it uses an Intel Graphics 620.

 

Thanks in advance.