I've had the gsync version since release in May. Originally I had my taskbar off to the side, not run in hdr due to win 10 not really functioning correctly. 4 months in with heavy monitor usage. 16 hours a days? I noticed a slight yellow ting where the taskbar is. I think I discovered this while looking at a game menu with a white background... Anywho I decided to hide the taskbar and the yellow ting did fade away over time.
In February I turned off my monitor and let it auto panel maintenance like usual. I turn it on later that evening and find a white vertical strip running up the monitor. I was extremely bummed. I contacted dell, they shipped a refurb out 2 day shipping which was very fast, BUT it was very poorly packaged. It came damaged and very dirty with dozens of finger prints all over it. I was completely shocked at what came. So I contacted Dell again to show that the monitor was damaged. They will not ship a replacement until they receive the damage one they shipped. This took quite some time due to ground return shipping. From my records, it shows they shipped the original replacement feb 16th. I received the second replacement the 24th. So about 8 days in total.
The second replacement which is a refurb has spots on the antiglare coating. I suspect all of them have this issue. I watched a video showing how to remove the coating but i'm hesitant to try it as I only notice them when there's a light source directly hitting the screen.
The later versions of this monitor have newer firmware that is much more aggressive with burn in prevention. I can visually see the pixels shift ever so often on this newer refurb. The original did not have this issue. Also I notice "RARELY" the monitor decides to not run gsync correctly (Fps shows 185fps in game and doesn't look like gsync visually is working). To remedy the problem, I have to power cycle or reopen the game. I didn't have this issue on the original. I'm wondering if it's a firmware bug that was introduced.
Besides that, this monitor is amazing on windows 11. I leave it on hdr 144hz in desktop sessions then set games to run 175hz 8bit hdr. I'm so happy with it. I will say the only thing that would make this monitor perfect would be more resolution and 240hz then it would be PERFECT! Maybe in a few more years.