Fullscreen will not go 1920x1080.

Howdy! I’ve been digging around for a solution for this but cannot find one. Within the engine I have my play in new window set to 1920x1080 and it works fine, but as soon as I package my project and attempt to open it I get a box in the middle with black bars all around the side. I can get the game to go full screen, but only with black bars around the sides and my game rendered into a small box at the center.

In project > Config > DefaultGameUserSettings my file reads the following lines:
[/Script/Engine.GameUserSettings]
bUseVSync=False
ResolutionSizeX=1920
ResolutionSizeY=1080
LastUserConfirmedResolutionSizeX=1920
LastUserConfirmedResolutionSizeY=1080
WindowPosX=-1
WindowPosY=-1
bUseDesktopResolutionForFullscreen=False
FullscreenMode=1
LastConfirmedFullscreenMode=1
Version=5

[ScalabilityGroups]
sg.ResolutionQuality=87
sg.ViewDistanceQuality=2
sg.AntiAliasingQuality=2
sg.ShadowQuality=2
sg.PostProcessQuality=2
sg.TextureQuality=2
sg.EffectsQuality=2

I have tried the following solutions, none of which have solved my issue:

Thank you.

I’m not sure how but I managed to fix the issue.

I packaged the game, went to …
C:\Users\USER\Desktop\Project\Project\Project 4.5\Saved\StagedBuilds\WindowsNoEditor\Title\Saved\Config\WindowsNoEditor

and changed “GamerUserSettings” to
[/Script/Engine.GameUserSettings]
bUseVSync=False
ResolutionSizeX=1920
ResolutionSizeY=1080
LastUserConfirmedResolutionSizeX=1920
LastUserConfirmedResolutionSizeY=1080
WindowPosX=-1
WindowPosY=-1
bUseDesktopResolutionForFullscreen=False
FullscreenMode=0
LastConfirmedFullscreenMode=0
Version=5

this fixed the issue. Why did THIS particular change fix it and not any of the others?

Thank you for any insight into this issue.

CMB