Fallout 3, and New Vegas mouse lag? 11

I played Fallout 3 for hours, and noticed a lot of mouse lag. Recently did a quick search, and found a VERY quick fix. In New Vegas, and Fallout 3, Vertical Sync being disabled is not saved, you have to go in and manually do it.

Config file name/location for FO3: C:\Users\username\Documents\My Games\Fallout3\FALLOUT.INI
Config file name/location for FO3/NV : C:\Users\username\Documents\My Games\FalloutNV\FALLOUT.INI
Change iPresentInterval=1 to iPresentInterval=0

Hopefully this helps someone out.

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11 thoughts on “Fallout 3, and New Vegas mouse lag?

  1. Reply planbsk8erb Apr 19,2011 3:49 am

    thanks a lot bro. a lot of other sites only told me to change it in one location, didnt know about the other location till now.

  2. Reply Vivi The Mage Apr 19,2011 8:03 am

    Yup, I noticed the same thing, so I compiled them. Glad it was helpful :thumbsup:

  3. Reply eugene May 3,2011 4:19 am

    you are my savior, tnx!

  4. Reply Al Sep 7,2011 6:15 am

    Help me i dont know how to fix my nv im confused where do i find these settings

  5. Reply Al Sep 7,2011 6:19 am

    Help me i dont know how to fix my nv im confused where do i find these settings. where do i first go to find this please help

  6. Reply Vivi The Mage Sep 7,2011 8:10 am

    What OS are you running?

    For new vegas, mine was listed under : C:\Users\username\Documents\My Games\FalloutNV\FALLOUT.INI

    windows 7 x64, just replace username with your actual computer username.

  7. Reply Joe Nov 26,2011 9:11 am

    thanks Viv gonna try it out now… i’ve seen you on other websites givin helpful advice also 😉

  8. Reply Vivi The Mage Nov 26,2011 9:56 am

    I just reformatted, so I had to redo this myself, it still works :).

  9. Reply Jesse Feb 14,2013 3:18 pm

    Thanks so much! This worked 🙂

  10. Reply Nilo BP Dec 12,2013 9:09 pm

    Holy!… I can’t believe I suffered through NV without this. Thank you so, so much.

  11. Reply Martín Sep 7,2015 9:15 pm

    Worked for me; this fixes the annoying mouse lag. Thank you!!

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