How to increase mouse sensitivity in Skyrim?

How can i increase mouse sensitivity in Skyrim?

• on the main menu the mouse cursor is sluggish
• in-game mouse sensitivity is too low

Things i've tried:

• increasing Look Sensitivity in-game:

  

• In my SkyrimPrefs.ini file:

  • Increasing [Controls]\fMouseHeadingSensitivity from 0.0125 to 1.0500
  • Adding [Controls]\fMouseHeadingXScale = 1.0500
  • Adding [Controls]\fMouseHeadingYScale = 1.0500
  • Turning off mouse acceleration: Changing [Controls]\bMouseAcceleration from 1 to 0
  • Turning off v-sync: Adding [Display]\iPresentInterval = 0

• Changing Detail in the launcher to Low from auto-detected Ultra

• Running in Windowed mode
• Turning off Steam's Overlay UI:
• Increasing my mouse pointer speed in Windows

Note: My question is different from How can I sync vertical/horizontal mouse sensitivities?, which looks to make the poor mouse sensitivity equal in both directions. i want not poor mouse sensitivity.

Note: "C:\Program Files (x86)\Steam\steamapps\common\skyrim\Skyrim\SkyrimPrefs.ini"

Note: And restarting Skyrim after each change.

Note: Including details of what i've tried are only presented to shut people up who bitch about a "lack of research effort". i should be able to ask my question with explanation, justification, or research. Also people love screenshots - it draws them in like moths.

See also

• FoV and sensitivity.
• How do I even out the mouse sensitivity?
• Tweaks to make Skyrim that much better (self.skyrim)

Solution 1:

The suggested SkyrimPrefs.ini i was using was the wrong one.

Using Process Monitor i was able to figure out that the correct one is:

%USERPROFILE%\Documents\My Games\Skyrim\SkyrimPrefs.ini

e.g.

C:\Users\Ian\Documents\My Games\Skyrim\SkyrimPrefs.ini

Changing [Controls]\fMouseHeadingSensitivity to

fMouseHeadingSensitivity=0.1250  (new)
fMouseHeadingSensitivity=0.0125  (old)

did the trick.