I got the AOC yesterday.
Since my Motherboard did not have any DisplayPort on it, I decided to buy an NVIDIA card alongside with it.
Unfortunately I'm also stuck at 30Hz under Windows 7.
It's an EVGA GTX 750 Superclocked model.
First I tried the stable release, then the NVIDIA Beta drivers, both the same, can't select more than 30hz.
DP 1.2 is activated in monitor settings. Installed the .inf drivers from the AOC homepage.
Here's the funny part: I booted up into my Ubuntu installation and installed the closed-source NVIDIA drivers there, rebooted, and it immediately felt very fluent. No flicker.
xrandr und the NVIDIA control panel confirm: 60hz @ 3840x2160!
So this seems to be a software issues for sure.
Since I'm more of an Linux user anyway, this is not too bad. But still very much annoying, as Windows is the platform where it should work best. And for the occasional game I still might need to boot up Windows.
Am I missing something here?
Maybe some of you guys can try AMD @ Linux?