How can I fix mouse lag in Skyrim?

I have insane mouse lag in Skyrim. I have changed

iPresentInterval=0

in Skyrim.ini file and

bMouseAcceleration=0

in Skyrimprefs.ini

But I still have mouse lag and the game is unplayable. What can I do?

Solution 1:

I had the same problem that you are experiencing and determined that the source of the problem lies with the mouse (for me anyhow). I have the razor naga, and after turning off acceleration in skyrim and also turning off vsync I experienced the same lag. When i would move the mouse rapidly the game could not keep up. After thinking about it I found that the razor naga had an acceleration of its own and after turning off the mouse acceleration directly at the source of the mouse (razer naga control panel "downloadable driver") the game ran perfectly.

Solution 2:

There are two fixes for mouse lag. There's the one you mentioned, which you should use. There's also this one:

Disable mouse smoothing

• Go to your Steam Directory, then steamapps, common, skyrim and select Skyrim again.
• 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.

This fix and the two below are from Skyrim Reddit, and are credited to “Dead man posting” on the Something Awful Forums.

Using both of these worked well for me.

source: http://www.pcgamer.com/2011/11/11/the-elder-scrolls-v-skyrim-tweaks-improve-graphics-disable-vsync-change-fov-and-more/