Initial Client Launch Resolution issue
So you seem to have missed a polish mark for first start with the client. (I know, Alpha).
Why? I'm on a monitor > 1080p (possibly many others too), and having the game switch to 1080p or 720p is slightly annoying and can break some window and desktop item alignment.
The game needs to find the desktop resolution and apply it before the engine begins the renderer process which is a good solution.
Second would be to have the game match the desktop resolution all the time and up sample as needed, keeps color accuracy on monitors too when you're using a resolution thats not 1:1.
Third, would be just to go Borderless Windowed at start. :D
e: Its on lumberyard, yeah this should be easily defined in system_windows_pc.cfg.