Fallout: New Vegas Message Board  

this annoyed the hell out of me in Fallout 3 and they stupidly brought it back (without a toggle option) in New Vegas. Luckily it's an easy fix:

File Location: My Documents\My Games\FalloutNV

adding the following lines to FalloutPrefs.ini worked for me. I set the file to Read-Only afterward to prevent it from being overwritten.

fForegroundMouseAccelBase=0
fForegroundMouseAccelTop=0
fForegroundMouseBase=0
fForegroundMouseMult=0

YOU MUST SET THE FILE AS READ-ONLY AFTER THE EDIT!!!!
if you don't steam will erase your changes once you load the game.

forums.steampowered.com/forums/showpost.php?p=17826766&postcount=16

Nice find, I was wondering if this fixed this issue or not and no they brought the sill thing back for an encore...

yup. i didn't even play the game last night because of it. Luckily now that it's fixed i can actually enjoy it.

I'm kinda nervous about steam though. Since it kept rewriting the file, i have a bad feeling it's gonna screw up some modding potential.

Well..

Go to the Official Fallout Forum and vote;-)

Link

like that will actually do anything.

Bethesda never added a toggle to F3, and obsidian is never going to add a toggle to FNV.

So you just do this and your good.

I used this when I first got the game and it worked beautifully but after the latest patch the mouse acceleration is back...any idea how to fix this?