I returned the monitor, and why follows soon. First thing first, the build quality is absolutely superb, it's heavy, it's sturdy and it's stable. Looks are always subjective, but I like the design because it's not intrusive as some other gaming monitors. It has RGB on the backside, but you can turn it off and no one would know that it has lights there. The picture quality was damn nice, but only after some fiddling in settings. Now, I don't have a calibration tool, so it was done by just looking at it, at the retina near it and other monitors I had around it. This is an 8bit + FRC monitor so the colors are a bit oversaturated for my taste, especially the red and orange ones. But that's the case with all of these monitors because the digital products are made with sRGB in mind in 99% of cases. But after some time I have managed to town it down to a more natural look. It also has sRGB emulation mode, but it sucks because you can't change a bunch of settings then, like contrast for example and it's too dark.
Contrast, while I don't have tools to measure it, was quite good. I've tried a bunch of games on it, from CS, Quake, R6, LoL, RE7, Tomb Raider, ArmA, etc. and they all looked good, except maybe RE7. That game is by default quite... bad looking one and weird contrast inside the game didn't help it out.
The panel didn't have any dead or stuck pixel so that was quite a nice feeling. There was some BLB at the right side of the panel, near the corner of the screen and in some very rare situations it was a bit too visible than one might like, but nothing game-breaking. Regarding the IPS glow, it ofc had it, and it was maybe a bit too noticeable at the lower-left corner because it was spread over a little bigger portion of the screen than it usually is. But again, nothing game-breaking and if I positioned the monitor right in front of me, it basically was not visible at all. But I had it side to side with my LG 24GM77 so I couldn't have it right in the center of the table.
Now the responsiveness, overshoot, and blur. Same as the AD27QD, this monitor is not meant to be set to Speed setting because you will experience drastic overshoot if your FPS dips below 100, especially bellow 80. Setting it to Balanced eliminated that problem pretty much entirely and I didn't experience any visual artifacts on 120, 144 and 165 Hz with that setting, while at the same time performed a lot better in range of 60-100 fps. Blur, it was visible in some instances if you were looking for it, and comparing it to my LG 24GM77 which is 144Hz TN, I really didn't notice big differences. Yes, TN is a bit faster, but I noticed that only when comparing them side by side and looking for it.
So all in all, you could say that this is damn near the perfect monitor. So why did I return it? Because it has two annoying bugs. One of them is tied to firmware definitely. And here is the scenario. The monitor has those picture modes, FPS, Standard, Aorus, Multimedia, etc. For example, if I set the overdrive mode to Speed, and the monitor went to sleep mode, I would get locked out of ever-changing that setting again. So as you can imagine, I was stuck with the overdrive on the Speed mode. Then I switched to another mode, adjusted contrast, gamma and all of that again, set it to Balanced, and after the monitor went to sleep mode, I was again locked out, but this time the overdrive was also switched to slower, Picture Quality mode without any way of changing it back. same thing happened again and after that. And it again randomly switched to one of the three available overdrive modes. I just disabled the sleep mode after that. And now, I'm not sure, but I also think the same thing happened on of the other modes after I turned the monitor off and on again.
Then here and there I would notice some weird, white, blur, behind the letters on a white background when scrolling. And once you notice that, there is no way of not seeing it ever again. And the only way to fix it was to switch between overdrive modes. So for example, if I had it on Balanced, I would switch it to Speed and then back again to Balanced. But as you know, I was constantly getting locked out of those settings.
After a while, I was just too frustrated by that and at the same time, Viewsonic announced the new Elite lineup. So I returned it. Now, the monitor itself is really, really good and if Viewsonic fails me I might buy it again if they ever fix those firmware problems.
I contacted Gigabyte and explained the problem, but they were surprised how I even managed to get it because at the time it wasn't released yet and they couldn't help me out because even they didn't have it their offices yet.