It's 2560x1080, on this big of a screen that resolution is going to look like dirt.
i can think of a reason why anyone would want 2560x1080 on a 34"
You have to remember the aspect ratio, it's adding horizontal pixels, not vertical so you get some silly diagonal numbers but it ends up the same ppi. It's instead of having 2x 1080p 23" screens alongside each other having 1.5 screens without the bezel.
It's only at 34" you start to stretch the resolution more compared to a normal 23" panel. At 34" it's a waste but at 29" it's effectively easier and bezel free way to do eyefinity/surround effect.
https://www.sven.de/dpi/
and
http://www.displaywars.com/29-inch-21x9-vs-34-inch-21x9
1080p 16:9/23" gives 95.78 ppi
1080p 21:9/29" gives 95.81 ppi
1080p 21:9/34" gives 81.72 ppi
If you compare this to all 16:9 screens
1080p 23" 95.78 ppi
1080p 27" 81.59 ppi
1080p 34" 64.79 ppi
So 21:9/29" is sensible for 1080p and equivalent to 1080p/23". 34" 21:9 is effectively equivalent to 27" 16:9. We mostly think about 1080p in regards to 16:9, and 34" screen with that res/aspect ratio is going to be god awful, with the wider aspect ratio it isn't close to as bad, it's not great and I wouldn't do it but I don't think it will look terrible.
To me when you consider changing screen at the very minimum I would want to maintain the ppi I have now, if I could improve it, great though there is a maximum you can really see at the 1-2 ft range.
Monitor makers are retarded though, freesync finally adds a good way for the screen and gpu to talk to each other, something you would think should have been thought of like... I don't know.... 40 years ago as a standard feature. Two parts of a system working together, nope, industry has survived on them barely communicating and basically not moving forwards.
Hell switching modes on my monitor, if I want to play in 3d or even check the damn refresh rate(as too many games randomly switch the screen from 120 to 60hz without telling you) is a pain we are basically in the past year alone getting screens with extra buttons to make some of this crap easier... it's insane. Freesync/adaptive sync and god damned usable UI on monitors that can change between modes with a single touch of a button should have been features for the past 20 years. We've been at 1080p/23" for so long as standard and rather than go with a bunch of bigger higher res panels, they are making more 1080p/27" models than 1440p/27" models... the industry is mental.
Honestly by this point we should really have moved on to where most 23-24" panels were 1440p and all 27" screens were, with 4k starting to become more common at 27-30" screens. Instead we seem to have a bunch of 1080p 27" screens, a bunch of 4k 24" screens, and a couple of 27" 4k screens...seriously, monitor makers are all mental.