I can't get 1440p in borderless window mode

So I just got my asus rog monitor in today it's desktop display settings are on 2560x1440 and same on the nvidia control center.

When I start up the game the resolution is grayed out and I can't change it while in borderless window mode. If I go into fullscreen I can change it, but I have multiple monitors and swapping in and out of the game made my entire screen flicker in and out. Here is a screenshot of what it looks like I can't change the resolution at all.
http://steamcommunity.com/sharedfile.../?id=893919792

Also never had a gsync monitor before, which is enable for windowed and full screen mode in the nvidia control panel. Was wondering if there is something that would show me gsync is working?

Borderless windowed can only be your windows resolution, that's why you can't change it.

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Originally Posted by StouterTaru

Borderless windowed can only be your windows resolution, that's why you can't change it.

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Ah that helped me figure it out the display up top was set on display 1 which is my primary desktop which is set through windows and nvidia, but it's considered monitor 2 in ffxiv.