Found this from here: http://www.wsgf.org/forums/viewtopic.php?f=61&t=15216&p=147709

It seems that the 21:9 aspect ratio is the cause of it.


"All,

Its IS possible for this game to support in game resolutions ABOVE 1920X1080 with minimal distortion (up to a certain point.....)
However, due to HUD limitations only 4:3, 16:9 and 16:10 ratios are supported.
21:9 and other aspects ratios cause extreme stretching of the HUD (such as Matrox Triple Head and Eye Infinity)
In order to achieve acceptable results it requirements manual editing of the GAMEDIR/GAMEDATA/data/_lvl_pc/vidmode.ini file.
Under supported graphic cards chipsets, you must input the the required resolution in the appropriate section under the resolution management with specific color depth.
I will share an extract example using 2560X1400 (16:9 resolution):

[Vendor 0x10DE Device 0x1212 Hint 0xFDC00000]
2560 1440 0 0 1
1920 1080 0 0 1
1680 1050 0 0 1
1600 900 0 0 1
1440 900 0 0 1
1400 1050 0 0 1
1366 768 0 0 1
1360 768 0 0 1
1280 1024 0 0 1
1280 960 0 0 1
1280 800 0 0 1
1280 768 0 0 1
1280 720 0 0 1
1280 600 0 0 1
1152 864 0 0 1
1024 768 0 0 1
800 600 0 0 1
720 480 0 0 1
640 480 0 0 1
640 400 0 0 1
512 384 0 0 1
400 300 0 0 1
320 240 0 0 1
320 200 0 0 1

You must input the added resolution within each section in order for the game to detect the resolution in game.
I recommend adding to every chipset section as I do not know the manufactuer that people would using for play.
Also, make sure the resolution is SUPPORTED by your video card. It seems that any supported video card resolution works, as I have tried some "oddball" resolutions and the game still recognizes them all.
The main selection screen remains at normal 4:3 proportion (albeit stretched). I have included a screen shot at 2650X1440 in proper pixel resolution.
2560X1600 resolution definitely is supported and looks a bit more stretched vertically.
For reference, I am using the Star Wars BattleFront II "Ultimate Edition" using a nVidia GeForce 675M graphics card."