Alright, Psychor, I have good news for you, it's the Display Port 1.2
After reading most of this thread, those problem are virtually EXACT as mine. And I DO NOT have a Dell UP3214Q yet. Just HP ZR30W x 2, 1 x 60" Sharp LED.
SO the problem is display port 1.2
It's not windows 7 or 8, (surprise), and I don't think it's nvidia neither, as 1 guy said his problem starts as soon as he switch to DP 1.2 to ge6t 60Hz, and he's using an ATI video card
Now, assuming it's display port 1.2 using the process of elimination, can this be fixed in the future? As I don't see how. Once a monitor c/w DP 1.2, obviously you can't upgrade it. And no other ports will work. So does that mean once you bought it, you are stuck, or does it mean Nvidia can come up w/ a newer ver. of driver to accommodate this DP 1.2 problem?
hmmmm.....so this means the Asus and Sharp 32"s will have the same issues with DP?
Its odd it seems like these are isolated problems or just people with ATI cards?
I have seen some reviews and impressions and don't hear issues while others are terrible