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Fallout New Vegas

Getting Ultrawide resolution

Launch the game

Change the settings to your desired settings (set resolution to 1920:1080)

Under: /mnt/<mount>/steam/steamapps/compatdata/22380/pfx/drive_c/users/steamuser/Documents/My Games/FalloutNV

File: FalloutPrefs.ini

Edit:

iSize W=1920 to 2560

fRenderedTerminalZoom=33 to 75

Linux /<mount>/

Mouse Sensitivity too high on menus

Under:

Windows: C:\Program Files (x86)\Steam\steamapps\common\Fallout New Vegas

Linux: /mnt/<mount>/steam/steamapps/common/Fallout New Vegas

File: Fallout_default.ini

Edit:

bBackground Mouse=0 to 1

iPresentInterval=1 to 0

Add below “bBackground Keyboard=1”

fForegroundMouceAccelBase=0
fForegroundMouseAccelTop=0
fForegroundMouseBase=0
fForegroundMouseMult=0