Yeah....retarded screen is retarded.... I'm in the same boat with you my friend. Ordered an Acer XF270HU couple of weeks ago. The first arrived and had a whole cluster of dead/stuck pixels, didn't keep it on for longer than 10 minutes so didn't bother checking for IPS-glow.
Sent it back and got a replacement - no dead/stuck pixels but the IPS-glow was HORRENDOUS! I am getting cross-eyes by only using it for internet browsing in a well-lit room so go figure how bad it was.
Sent this one back too and was asking here should I try a3d one or just go for a different brand/model. Then I found this
https://www.youtube.com/watch?v=mje_fmayu0k
They tested 20 monitors Asus ROG PG279Q and out of all 20 only 2 were barely "acceptable". Quality control seems to be nonexistent...
I know it's not the exactly same model as yours but you get the flow....
If you can't be bothered watching the whole video just look at the photos:
http://imgur.com/a/jWO59
So...what would I do if I were you? If you have the patience keep returning the monitors until you get one that is good enough, or ...just go for another brand/model.