Home > Skyrim > Skyrim Tips that Help with Mouse Lag and Physics Glitches

Skyrim Tips that Help with Mouse Lag and Physics Glitches

The 1.3 fixed the y-axis sensitivity. These modifications still apply for mouse lag/physics glitches:

Many problems are caused by having your fps go above 60, but if you leave vsync on (capping the fps at 60 of 120 depending on your monitor), the mouse lags like crazy. I haven’t been able to get triple buffering working (on my GTX 570), but I have figured out how to fix both problems.

These tweaks go in one of two INI files (Skyrim.ini or SkyrimPrefs.ini) located in Documents/My Games/Skyrim.

Fix mouse lag by disabling vsync in Skyrim.ini
- Add iPresentInterval=0 under the [Display] section

Fix physics from going bonkers at high FPS – LOL
- Download FPS Limiter*:
Extract to your Skyrim folder under Steam/steamapps/common/Skyrim. Open antilag.cfg and set FPSlimit=60.

Fix mouse acceleration by disabling it. This goes in SkyrimPrefs.ini
- Set bMouseAcceleration=0 in the [Controls] section

The following change is not recommended with the 1.2-onward patches. If you had previously added this and are experiencing mouse issues, try removing the changes:

Fix y-axis sensivity being different from x-axis in Skyrim.ini
- Add to following under the [Controls] section. If you don’t have a [Controls] section, add it!
fMouseHeadingYScale=0.0200
fMouseHeadingXScale=0.0200

PLAY WITH fMouseHeadingYScale UNTIL IT FEELS GOOD IN GAME. For me making them match had the y-axis more sensitive than the x-axis (might be due to 120Hz monitor, 0.0140 was the sweet spot). So play with it until they’re the same. Test this in an area that is closest to your average fps – which is hopefully 60fps (due to sensitivity going lower the lower your fps goes – no fix for that yet).

There are more tips on the Neogaf Forums but things are still in somewhat of a mess as we figure out what works well and what does not. Some tweaks have been shown to have unexpected side effects. Unless you are an advanced user that likes living on the dangerous edge, I would recommend sticking with as clean of an install as possible.

I also recommend protecting your saved games against corruption and loss by using Dropboxifier.

* You can also use something like dxtory to limit your fps (useful if you are already using a modded d3d9.dll). I leave it to your discretion, but can offer no support on other fps limiters since I don’t use them.

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Categories: Skyrim
  1. gok
    November 15, 2011 at 6:07 am

    great works

  2. Gravity
    November 15, 2011 at 6:46 pm

    Link for FPS Limiter isn’t working

    • November 15, 2011 at 6:52 pm

      Look like Skyrim Nexus itself it down. For now I’ve mirrored ithere Nexus is back up!

  3. blah blah
    December 1, 2011 at 2:30 am

    they did something in the 11/30 patch that screwed up y axis horribly. I had both x & y set the same, and it worked perfectly. Start playing today, and the y axis hardly moves at all even with tons of rolling. I go look at the ini files, and they’re changed a little, but my x & y values are still the same. They did something in their damnable patch. God damn auto-updates!

    • December 1, 2011 at 2:33 am

      Yeah I heard about that – try removing the fMouseHeadingYScale and fMouseHeadingXScale entries from the INI completely. I heard that the default values work properly now. I can’t confirm since I’m avoiding the update…

  4. December 27, 2011 at 12:34 am

    You did It! Thanks a bunch! My mouse was lagging terribly on my new laptop, And I didn’t think I could live with it at all, an I was only at the opening scene :)

  5. Pat
    July 10, 2012 at 3:27 am

    None of this works for me. And if I update skyrim to the latest patch my graphics get all buggy.

    • July 10, 2012 at 9:58 pm

      The tips in the article have nothing to do with graphics glitches. You might want to check elsewhere, like the Steam forums (http://forums.steampowered.com/forums/forumdisplay.php?f=1182).

      As generic advice: ensure that your video card drivers are up-to-date and that your video card is not overheating (use MSI Afterburner or equivalent to monitor the temperature).

  6. F.Haagen
    April 12, 2014 at 11:31 am

    I can’t open the antilag.cfg file.

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