Borderless Windowed only goes to 2293x960

Code:

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Time: N/A
Frequency: Always
World name: Tonberry
Character name: Karma Getsome
Retainer name: N/A
NPC name: N/A
Monster name: N/A
Class/Level: N/A
Party or solo: N/A
In-game time:N/A
Area and coordinates: N/A
Housing: N/A
Steps:
1. Have an UWVGA monitor such as the Acer X34 and also the Nvidia GTX 1080 card.
2. Swap from fullscreen to borderless windowed

Connection Specs
N/A

PC Specs
-=-=-=-=- System Information -=-=-=-=-
OS: Windows 7 x64 Pro
Security: Kaspersky Internet security 2016
Mouse: Logitech G502 without software
Monitor: Acer X34 with drivers from windows update (just a color profile)
GFX: Nvidia GTX 1080

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-


Name and version of the browser currently in-use: Firefox 47.0.1
- Internet Explorer Version: Old, not really installed.

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It really creates a lot of Aliasing.

This happens in both the DX9 and DX11 client (full screen still bugged, see last report)

Pics:

http://v48i.imgup.net/nativeres3656.jpg

http://f07i.imgup.net/lowrese243.jpg