I can't get the 4k resolution.
I'm using Windows7 64bit,newest radeon drivers like 18.3.4 and I have AOC G2460PF 144HZ Monitor,connected via Displayport 1.2.
On the monitor I changed DP Capability to 1.2,Virtual Resolution is enabled and my maximum resoluiton scale is 2560x1440..

What can I do to make the resolution good?(4k) Any help,please? !