Can't Get 4k 60Hz Nvidia GTX 960 To Work

[mchammer2]

Hello.

i am trying to get my 4k UP2414Q monitor to work at 60Hz.

Currently working at 30Hz, but when I enable Displayport 1.2, it does not show 60Hz and when I reboot, there is no input to the monitor. I have to VNC and edit Clover settings in order for it to work again.

Do you know of any way to make it work?

SMBIOS: 14,2

CPU: G3258

GPU: EVGA GTX 960

Mobo: H81MDS2

When I use MacMini 6,2 as suggested on some tutorials, I get a reboot loop.