So I either bought the wrong thing, or just don't know how to configure it correctly. I bought a Acer XR342CK bmijqphuzx , and have it hooked up to a Macbook Pro w Touchbar 2016 via a Caldigit TS3 plus dock using displayport.
Basically the fonts looked jagged and borderline blurry. At first I thought there was something wrong with my eyes and I kept squinting. I missed with the font smoothing effects in MacOS and don't notice any changes.
Thanks for the help, was looking forward to this super wide 34 inch for video editing, but I didn't expected it to be annoyingly less sharp. I'm definitely open to the possibility that I've done something stupid!