Dunlop0078 :
Know that pretty much all of these new 144hz or higher ips 1440p panels are plagued with backlight bleed and ips glow issues. The main reason to get an ips for a gamer in my opinion is to avoid color shift every time you move your head, but ips panels are more expensive and tend to have per sample issues tn's dont typically have.
I second this. Current 1440p 144hz 27" panels are from a specific manufacturer with horrible quality control issues, and the brands don't really have a choice as that panel manufacturer appears to be the only one producing these panels.
The lab I work in renewed a large portion of the monitors with ASUS VC239, a very cheap (120$) ips monitor. You would think that they must have been crap for that price, but they are actually quite good. None of them had any backlight bleed, zero. I bought a couple for myself after I saw this, needless to say zero backlight bleed.
A few months ago, I wanted a high refresh 1440p, and having seen the IPS panels it wasn't possible for me to go back to TN. I looked online and saw quite a lot of complaints about backlight bleed with PG279Q but I though these must be a small percentage that is actually a large number due to the high number of sales. So I went ahead and bought the monitor. I had to return it the next day. Recently I noticed that even the positive reviews on newegg mention that they have backlight bleed, sadly they think this is a normal thing, which is absolutely not as I have seen far too many IPS monitors with zero backlight bleed to accept that.
4ms however, I didn't find an issue. There was no ghosting or anything like that., at least nothing I could notice. I am still waiting for a good quality 144hz IPS that is not plagued with backlight bleed. I guess I will have to wait until another manufacturer starts making 144hz IPS panels, if they do at all.
I would suggest staying away from that monitor, unless you are ready to go through a lot of returns to get a good one. However, if you want to buy it and the backlight bleed doesn't bother you, the 4ms is nothing to worry about.