I was extremely excited to get this monitor. I was looking to upgrade from my old 2 monitor setup and tried a 4k, but found it not to my liking. I started looking at Ultra Wide's and was able to get my hands on an HP Envy 34 inch which convinced me to get a 3440x1440 21:9 monitor. While I'm not a hardcore gamer I was enticed by the ability to have 75hz and freesync which I felt gave this monitor an advantage of the LG/Dell/Samsung competition.
I have a main windows desktop and mac work laptop which I had planned to use in Picture-by-Picture mode so I wouldn't have to use separate displays or be switching inputs. To my huge disappointment the built in PBP features, or lack there of, for this monitor is a deal breaker for me. The inability to change the scale the displays and have it stuck at 3440x1440 is ridiculous. I thought maybe I was doing something wrong, but after many attempts and different configurations I finally concluded this couldn't be done as when switching to PBP mode it locks the 'wide mode' at 'full' and doesn't allow any changing. Why even have PBP if you're not going to provide any useful support for it? Sure I can plug in another comptuter/device and have it shrunk down to fit in the screen space, but it's unfortunately un-usable.
The second gripe I have with this monitor is the lack of any display management software. The ability to set up regions on a screen this large is, in my opinion, standard. The ability to quickly organize windows in a way which would increase productivity is something which should be there. How can Acer think this is ok to ship a 21:9 3440x1440 monitor without these features? While this may seem small when you're paying nearly a grand for a monitor which is lacking in features cheaper monitors have it makes the decision to return it an easy one and I'll save a few hundred while I'm at it.