Why can't I turn off mouse acceleration in Skyrim? [duplicate]

Here are some suggestions from reddit about this issue (note one of them you already tried):

Borrowed from "Dead man posting" on the Something awful forums, All credit goes to him. Reposted here for Reddits pleasure:

How do I fix the crash to desktop?

Go to Start -> Control Panel -> Sound
In the Playback tab, right click on Speakers (or whatever has a green tick next to it), then click Properties
In the advanced tab on this new window, select 24 bit, 44100Hz (Studio Quality) in the drop down menu

How do I fix some sound issues, such as hearing static during NPC dialogue?

Go to Start -> Control Panel -> Sound
In the Playback tab, right click on Speakers (or whatever has a green tick next to it), then click Properties
In the advanced tab on this new window, select 24 bit, 44100Hz (Studio Quality) in the drop down menu

How do I disable the smooth mouse settings?

Go to your Steam Directory -> steamapps -> common -> skyrim -> Skyrim
Create a backup of the SkyrimPrefs.ini file
Open the file, then scroll down to where it says [Controls] and find bMouseAcceleration=1
Change to bMouseAcceleration=0
Save, exit, and play

How do I fix the vsync ("laggy mouse") problem?

Go to your Steam Directory -> steamapps -> common -> skyrim -> Skyrim
Create a backup of the SkyrimPrefs.ini file
Open the file, then scroll down to where it says [Display]
Add to the bottom of the section iPresentInterval=0
Save, exit, and play

How do I change the FOV?

Go to your My Documents -> My Games -> Skyrim -> skyrim
Create a backup of the skyrim.ini file
Open the file, then scroll down to where it says [General]
At the bottom of this section, add fdefaultfov=XX (where XX is the FOV value you want to change to)
Save, exit, and play

EDIT: After much discussion in the thread, it would appear the above FOV command does not stick, and will revert to 70 on Fast-Travel. Try the console command "Fov xx" (~ for console, xx for an fov number)