The default game get itself in 2560x1080 (or your native I guess) even though ingame say 1920x1080, but with black bars.
Just hex edit the 16:9 value: 39 8E E3 3F to 26 B4 17 40 (2560) or 8E E3 18 40 (3440).
Everything looks perfect, except the hud get a little bigger and subtly overlapped.
