Hello, world!
Just registered after getting this monitor myself, figured I might be able to contribute a little to a thread that helped me a lot. Below are my initial impressions with the display after spending a few hours with it.
Setup was difficult, with the display initially being stuck at 2560x1440 @60Hz, even with the DP setting set to 1.2. Changing color depth to 8bpc allowed me to go to native res, but only at 30Hz. After fiddling with this for a good while, I found that my solution was to cycle power using the switch at the back. After this, everything got detected properly and stuff finally worked.
Black levels are great. Still nowhere near what a good OLED can do, but a ton better than my old Dell U2711 Eyefinity triplets. Colors seem solid, too. Not actually all that far off my Dells there, which were pretty high-end AdobeRGB displays at the time. Color shift is minimal, a lot less than I'd expected from a panel this big. It's visible when you display a solid color, but only barely. Factory settings are terrible, though -- using one of these on stock settings is just gross.
As for vignetting, the only other VA panel in the house is in a TV that's far past its expiry. Compared to the 5cm borders on that thing, this display does not offend at all. I can see it being an issue if you do go Eyefinity/Surround with these, though.
PWM (brightness at 26%) seems like a non-issue, at least so far. Have only used the monitor for a few hours, though -- we'll see if anything crops up. Couldn't actually SEE any flickering even at 0 brightness, for whatever that may be worth.
Now then, onto something a bit less positive. Mine appears to be suffering from a similar issue to the below quote:
Okay, I've noticed something very weird with one of the units: it blanks out when showing certain complex images at 4K! I first noticed it playing Fallout 4, with the screen going black when looking at areas with lots of trees in daytime. I assumed it was the game being buggy (it IS Bethesda after all), but I can actually make it happen on demand if I use an image viewer to look at a complex panoramic photo. At a certain level of zoom, the monitor goes black! If I zoom back out, it restores. It's not the cables or the video card because if I swap out the unit for either of the other two, they're fine. This same unit is fine otherwise, I played 30 mins of Far Cry 4 on it without a glitch. What the hell is going on there?
Can anybody who has this display check the following link and report back?
http://www.lagom.nl/lcd-test/clock_phase.php#clockcalib
(
warning: may blank out screen, CTRL+F4 to close tab)
Going here consistently blanks out my screen. The only way to get it back on is to minimize the window, or to move it off to another monitor -- it'll stay off until the page is gone. If I resize the window, sizing it to about 70% of the available space seems to be the point where it starts triggering. No problems in Fallout 4 so far (even in areas with loads of dead trees), and the Wikipedia image linked earlier doesn't cause any issues either.
There's also another oddity that I've noticed, though I don't think this really impacts anything. Try opening the following page and going through the different test patterns:
http://www.lagom.nl/lcd-test/inversion.php#invpattern
Video showing what happens here:
https://www.youtube.com/watch?v=0pmyLtwZqlw
Definitely happy with the display so far, though I'm really curious to know what's causing some of this odd behavior. Sorry for the massive text dump, good layouts aren't my forte.
And need a big monitor