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Updated: 10-28-12 05:16 AM
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Warlords of Draenor Pre-Patch (6.0.3)
Warlords of Draenor Pre-Patch (6.0.2)
Siege of Orgrimmar (5.4)
Escalation (5.3)
Updated:10-28-12 05:16 AM
Created:05-23-09 01:32 PM
Downloads:3,260,799
Favorites:1,522
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Categories:Leatrix Projects, WoW Tools & Utilities
6.0.3

Leatrix Latency Fix  Popular! (More than 5000 hits)

Version: 3.00
by: Leatrix [More]

A latency fixing program by Leatrix

Click here to lend your support!
What does it do?

Leatrix Latency Fix will reduce your online gaming latency significantly by increasing the frequency of TCP acknowledgements sent to the game server. For the technically minded, this is a program which will modify TCPAckFrequency.

You will see reduced latency in many online games including World of Warcraft, WildStar, Heroes of the Storm, Elder Scrolls Online, Guild Wars 2, Diablo 3, Star Wars: The Old Republic, Rift and more.

Note that Leatrix Latency Fix performs a different modification to the 'Optimise Network for Speed' setting in World of Warcraft. They are not the same thing and can be used together (more information on this in the FAQ).

System Requirements
  • Windows 7, 8, 10, Vista (SP1+) or XP (SP3).
  • Both 32-bit and 64-bit versions of Windows are supported.
Macintosh users should read the guide here.

Installation Instructions

You can watch a short installation video here.

Simply download the zip file, extract it and then run Leatrix_Latency_Fix_3.00.exe. When the program launches, click the Install button. You will see the status change from 'Not Installed' to 'Installed'. You need to restart your computer (or disable/enable your network card) for the changes to take effect.

Your Windows account needs to have Administrator rights in order to install or remove Leatrix Latency Fix. If your Windows account doesn't have Administrator rights, you will be prompted for the credentials of an account that does have them.

After Leatrix Latency Fix has been installed, you can login to your online games with reduced latency!

To uninstall Leatrix Latency Fix, click the remove button and restart your computer.

For reference, the status line in the program will show 3 possible tags. 'Installed' indicates that all network interfaces have been modified for reduced latency. 'Not Installed' indicates that no network interfaces are modified for reduced latency. 'Partially Installed' indicates that some network interfaces have been modified for reduced latency. You will see this status tag if you add a new network card (or perhaps a USB modem) after the installation of Leatrix Latency Fix.

Errors and Unexpected Behaviour

If you have any problems with the program, please click here to send me a message. Include your operating system and service pack as well as any relevant information (such as error messages). You can also try version 2 if you prefer (available here). Version 2 requires the Microsoft.net Framework (available here) but the mechanics are identical to version 3. You can watch a short installation video for version 2 here.

If you are having problems downloading from Wowinterface, please use this link on Dropbox (this link is subject to change so please don't share it elsewhere).

More Information

There is a FAQ covering pretty much everything here and there is a short installation video tutorial here.

To ensure that people always use the genuine Leatrix Latency Fix program, please don't publish it elsewhere. It's completely free so there is no need to. Please link to www.leatrix.com instead.

Links

Some official and unofficial videos and websites referencing Leatrix Latency Fix are listed below. If you have made an honest webpage or video featuring Leatrix Latency Fix and you would like to see it listed here, just send me a private message.

Official Leatrix Sites
Unofficial videos featuring Leatrix Latency FixLinks, fansites, nice people and interesting thingsMore

Visit Leatrix.com for genuine Leatrix software.

Leatrix software is protected by copyright and is ONLY hosted on Leatrix.com and Wowinterface.com. Files hosted anywhere else are NOT genuine and could contain viruses. Stay safe online and use only genuine Leatrix sites.

3.00
  • Leatrix Latency Fix 3.x is written in Python.
  • The Python configuration files are bundled with the download.
  • Integrated Microsoft User Account Control and Administrator rights detection.
  • This update is recommended for new users but optional for existing users.
2.0.2.0
  • Updated exception handling.
2.0.1.0
  • Simplified the code structure.
  • Restarts are no longer done for you so that you can choose whether to restart your computer or network card.
2.00
  • Leatrix Latency Fix 2.x is written in Visual Basic (Microsoft .Net Framework 4 required to run).
1.23
  • Updated the restart process.
1.22
  • To avoid confusion, unknown interfaces will no longer be listed in the checker script.
1.21
  • The checker script will now show network interface names and identify virtual or DHCP addresses correctly.
1.18
  • The checker script will now show IP addresses for the network interfaces which have been modified.
1.15
  • You can now run Leatrix Latency Fix from batch files using 'cscript <script name.vbs>' (eg. 'cscript c:\install.vbs'). Administrator rights are required for this.
1.12
  • Added a checker script which will inform you whether Leatrix Latency Fix is installed or not.
1.11
  • Added support for Microsoft's User Account Control.
1.00
  • First release.
Archived Files (1)
File Name
Version
Size
Author
Date
2.0.2.0
383kB
Leatrix
10-22-12 12:51 PM


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Unread 11-25-09, 08:04 AM  
lovswr
A Fallenroot Satyr
 
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Forum posts: 21
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Just found this wonderful little script yesterday.

150-250ms before
under 99ms after

Vista Home SP1
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Unread 11-18-09, 09:58 PM  
Forswear
A Kobold Labourer

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Before : 580ms
After : 260ms
Operating System : Windows Vista SP1

A huge thank you mate,coming from Asia the ping here is relatively high.
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Unread 11-13-09, 06:57 AM  
Skullcan
A Kobold Labourer

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OMG

Very Nice Job man... Farewell, SmoothPing!

:bow: @ u
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Unread 11-10-09, 02:21 AM  
Lonehwolf
A Fallenroot Satyr

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More! More! I want more client to server discussions! They're both cute fools! MORE MORE! Btw, great work - 240ms to 70ms. You hit bullseye
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Unread 11-06-09, 11:12 PM  
Gravewyrm
A Kobold Labourer
 
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AddOn Compiler - Click to view compilations

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Thumbs up Very Satisified

This lil fix is just what the doctor ordered. Normally my latency would sit at 300-330ms. After running your VBS script, latency dropped to 130-140ms, creating a 64% increase in performance from the network.

Thank you very much for this as it was needed. Better response times from clicks, smoother mob movement, and even less DC's.

Cheers mate, and thank you again!

**System specs**

Vista 32bit, Home Premium
4Gigs Ram
AMD64 x2 6000+
Dual Lan via MoBo (Asus m2n32 SLI Deluxe Edition-Wireless built in for 3x Lan)
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Unread 10-28-09, 01:35 AM  
Qwoos
A Kobold Labourer

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A Little help.

Had a small problem with it to begin with, ping went up! tinkered around with my connection a little more (other programs) pleased to say ping is now low and stable.

380ms -> around 320/340 ms. I live in Australia so thats pretty good. Thanks for the script
Last edited by Qwoos : 10-28-09 at 02:07 AM.
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Unread 10-26-09, 02:47 PM  
Obviousdwarf
A Murloc Raider
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IT WORKS
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Unread 10-21-09, 12:43 PM  
Zaben
A Kobold Labourer
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Went from 120 to ~56ms on a 8 meg connection in Vista.

Good program.
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Unread 10-21-09, 11:38 AM  
Hakula
A Murloc Raider
 
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wow what a great fix leatrix. my ping was terrible to begin with about ~110 when i installed the fix it's now down to ~40.

tyvm
__________________
"Life is meaningless. It is in death that we are truly tested." - Baron Rivendare
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Unread 10-10-09, 03:12 PM  
Ferous
Sheer Sense of Doom
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went from 230 to 100 about. im on windows xp professional
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Unread 10-09-09, 01:51 PM  
Bati
A Deviate Faerie Dragon
 
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i am very impressed... went from 200-240 to 70-80. Ty so much! i will put a link for this on my next version of Bati's Ui.
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Unread 10-09-09, 09:12 AM  
Masoa
A Murloc Raider
 
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Very nice. My ping went from 70-150 to 11-17 on WoW.

OS: Windows 7 Pro RTM x64
(from the MSDN Academic Alliance)
ISP: Verizon FiOS 25/15

Code:
           Before  After   Difference
Average     110     14      96
Max         150     17     133
Min          70     11      59
Last edited by Masoa : 10-09-09 at 09:21 AM.
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Unread 10-08-09, 04:12 AM  
Buio
A Kobold Labourer

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My results after testing this in Aion.

I used the command /ping a number of times in a area with few people zoomed-in looking at the floor (low CPU/bus usage).
OS: Windows 7 64-bit
NIC: nVidia nForce GBit Ethernet
ISP: BBB ADSL 24/1

Code:
           Before  After   Difference
Average     184.6    88.2    96.4
Max         272     125     147
Min         109      59      50
So my average ping went from 185ms to 88ms.

Aion ping before image:
http://img29.imageshack.us/img29/976...encybefore.png

Aion ping after image:
http://img75.imageshack.us/img75/864...tencyafter.png
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Unread 10-05-09, 08:07 PM  
Dpartd
A Kobold Labourer
 
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Leatrix, I <3 U

Seriously, I tried manually fixing my ping several times to no avail (with various online fixes). Your fix worked like a charm!

I live in AZ and my wow server is physically located in Boston, MA.

I went from a 250-310ms ping to a 125-135ms ping with your fix. I'm operating on a Vista 64 bit SP 2 machine.

Unbelievably, you've fixed my ping and I appreciate all of your efforts...donation inc!

Edit: Hmm, seems to be no way to donate to you for your work? Or am I missing something?
Last edited by Dpartd : 10-06-09 at 02:43 AM.
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Unread 10-05-09, 10:01 AM  
Yza
A Kobold Labourer

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ok, next info after my raids..
ulduar 25 : before: (250-2k ms) 14 dc's during whole raid
after: ( 50-250 ms) 2 dc's during whole raid
toc 25: before: (300-2k ms) many dc's during 1 mob of northerend beasts, + randomly dc ing during other encounters
after: ( 50-200 ms) ---> no disconnects <--- (only one lag spike for 1 sec on valkyrs, then normally continued without dc's..

(win xp sp3 / conection antivired+firewalled (2mb/s) / +/- 7 raid addons (not using recount and turned off combatlog))
thanks again for this great addon/utility, i really enjoy game with this
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