Mine is/was almost good. IPS glow is acceptable , the backlight bleed in the top right is pretty minor.
Can't get over the awful uniformity of the screen though. the top 30% ish of the screen is noticeably darker on light coloured/white webpages etc. Adds a brownish tinge to white and is always noticeable.
I've used a few different IPS screens over the years by Dell, Apple etc and no issues at all.
Not a "Premium" panel in my eyes. As a result mine it's going back.
I've had it now with 144hz IPS G-Sync panels. I've personally been through 4 XB270HU's , 3 PG278Q's and now finally this PG279Q.
All of them have had genuine faults including severe IPS glow + BLB, dead pixels , inversion and dirt stuck inside the screen.
Seriously come on... I think us enthusiasts/gamers etc are being taken for a ride with these screens. It's become pretty clear that the panels made but AU Optronics or whoever else is making them cant get it right and quite simply... the tech isn't ready. That or Acer/Asus just can't build them properly.
So yeah I've given up. All the money I've lost and time wasted shipping them was for nothing other than to learn a simple life lesson = "If it looks too good to be true, It probably is"
If you have a decent screen then awesome enjoy it!
Me... well I'm going to try ultrawide or something.