Titanfall 2 locked at 1920x1080

U can try change resolution by setting parameters -width  X -height Y

Examples for 1920x1080:

1) In "Titanfall 2" shortcut properties:

"C:\Program Files (x86)\Origin Games\Titanfall2\Titanfall2.exe"  -width 1920 -height 1080

or

2) in Origin -> Game Properties -> Advanced Launch Options -> Command line arguments

-width 1920 -height 1080

Details here: https://www.reddit.com/r/titanfall/comments/59ztd2/usefull_titanfall_2_shortcut_arguments/