Inversion Artifacts? - VG27AQ1A

[.HawK]

Hello all!

some time ago I bought a new Asus VG27AQ1A monitor. After 2 RMA attempts (first one was because the monitor would turn off on its own after about 2 hours of usage and the second one because of horrible backlight bleeding + the same issue as the first one) I finally thought that Asus finally had sent me a good unit, but after some gaming I noticed that there were some sort of artifacts when looking around in games (visible lines in white textures). After reading about inversion artifacts I tried the inversion artifact test on lagom and noticed that all the boxes except 6a and 6b are flickering when scrolling up and down, but not changing colors. Also when opening one of the patterns I noticed that the whole screen shows horizontal lines when the pattern is displayed (some pictures attached).

I don't know if this is normal or not or if these even are inversion artifacts. I have read that inversion artifacts are only really a thing on TN and VA and not on IPS panels.
Should I try to RMA the monitor or give up trying because I will get a defective unit again?


When the pattern is not on screen:

IMG_0195.jpeg (2.06 MiB) Viewed 478 times

And when the pattern is shown in the left corner of the screen:

IMG_0196.jpeg (1.58 MiB) Viewed 478 times

In the pictures the difference looks very miniscule, but in reality the screen looks like an old tv when the pattern is displayed.


I appreciate any help and thanks in advance.

Ps.: sorry for my english its not my mother tongue

[.HawK]

I've tested the monitor a bit more and found a test that can reproduce the issue.
When I'm close to the screen (roughly one armlenght), using the "Moving Photo" mode on the ufo test website and setting the speed to 120 Pixels/Sec the same, kinda transparent lines appear inside of the moving photo which are really noticeable. When setting the speed to 240 Pixels/Sec the lines seem to disappear though.

[Boomchakadah]

Pixel inversion artifacts are in my opinion the worst kind of monitor defects. They completely mess up the smoothness of everything. Games, videos, scrolling, etc. They are the very first thing I look for after getting a new a monitor. When I see them on a new monitor, I immediately put it back in the box and ship it back to the seller.

I read somewhere that those pixel inversion tests can actually cause a good monitor to develop pixel inversion artifacts, but I don't know if that's true on not. There is a safe way to check if a monitor has those inversion artifacts or not. Basically, hop into a quick game of krunker.io (or any other game that has blank non-textured walls), then stare at walls while jumping up and down (https://drive.google.com/file/d/1E_wnqy ... sp=sharing). If your monitor has pixel inversion issues, pixels on the wall will look like they are stuttering or shivering.

If you have the option to RMA the monitor again, I'd do so. I'd send them videos showcasing the issue as well, otherwise they'll return the monitor to you with a note that says there is nothing wrong with the monitor.