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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:3,279,222
Favorites:1,527
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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


Post A Reply Comment Options
Unread 01-02-10, 04:13 AM  
smlwrnc
A Murloc Raider

Forum posts: 4
File comments: 4
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At first I was quite a bit skeptical about this but backed-up my system and tryed it anyway and I must say WOW!!

My average Lat was around 180-220 ingame and now its holding steady @ 60-62!

Thank you so much for this it's truly amazing!
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Unread 01-17-10, 05:42 PM  
Ottoid
A Kobold Labourer
 
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Re: Re: Re: Re: Re: Latenfy Fix Results

works great, tnx =)
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Unread 01-19-10, 08:29 PM  
Toran
A Nerdscale Dorkin
 
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Premium Member

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Add me to your results list.

Old latency: ~200ms
New: ~90ms
OS: Windows XP
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Unread 01-26-10, 12:09 PM  
Jegar48
A Kobold Labourer

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Re: Latenfy Fix Results

Before: Anywhere from 275 to 375 MS depending on what dungeon, raid or zone I was in.

After: Consistently 124 MS no matter where I am.

This with no significant drop in frame rate.

Windows XP SP3
Intel Core2 Duo CPU EZ7400@ 2.8 GHZ, 3.2 GB RAM, Nvidia GeForce 9500 GT (512 MB RAM)

BTW, there is a note that this fix works better if you are hooked directly to your router, however I have seen the above results even though I am using a wireless hook up in a different room across the house from where the router is.

If your web page hit number has gone up in the past few days it's my fault, I've been telling everyone I know in the game about this great little utility.
Last edited by Jegar48 : 01-26-10 at 12:23 PM.
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Unread 02-01-10, 03:11 PM  
LDB10671
A Kobold Labourer

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Im on an expensive high end i7 system.

My pings went from ~150 down to less than 50.

It works great.
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Unread 02-05-10, 01:21 PM  
mactag
A Kobold Labourer

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OMG! i chuffing LOVE YOU! ive been having so many probs with latency in wow & now your script has cut my latency down to a 1/4!

Last edited by mactag : 02-05-10 at 01:22 PM.
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Unread 02-21-10, 07:38 PM  
dmoller0
A Kobold Labourer

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Oh my god does this rocks!?
Lowered my latency in dalaran from 87 to unbelievable 16!! GOOD JOB!
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Unread 02-21-10, 07:43 PM  
dmbardal
A Kobold Labourer

Forum posts: 1
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Thanks for this, worked perfectly on Windows 7 Home Premium 64bit.

Before: ~100-200ms
After: ~40-70ms
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Unread 02-27-10, 10:37 PM  
IceShadow
A Deviate Faerie Dragon
 
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Forum posts: 15
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Thanks for this, had it a long time ago and forgot to use it again after format.

Results are: Before (280ish) After (40-70)

Windows 7 Ultimate x64
Last edited by IceShadow : 02-27-10 at 11:44 PM.
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Unread 02-28-10, 11:03 PM  
Sylvax
A Kobold Labourer

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Nice! Went from 233 to 80-90. Great script!
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Unread 03-06-10, 06:41 PM  
llDemonll
A Kobold Labourer

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disregard, problem fixed itself after a while

a+ to this though, brought latency from 180-200ms in dal to 60-80
Last edited by llDemonll : 03-07-10 at 01:56 AM.
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Unread 03-10-10, 07:34 PM  
kaylirose
A Kobold Labourer

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This is amazing!
Before : 800-1800 Latency.
After: 55-66!

HUGE performance increase, I will be applying this to all the wow computers in the house.
This is just standing in Dalaran too! I'm excited to see the raid and dungeon improvement as well.

Thanks a ton!
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Unread 03-16-10, 05:52 PM  
Twilit Soul
A Defias Bandit

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Great!

It really does work =) Just wanted to put this here. I was worried when my computer restarted a bit slower than normal, but I don't think this was the culprit. WoW runs with around 60ms of latency now.
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Unread 03-18-10, 03:26 PM  
gromlv
A Fallenroot Satyr
 
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Re: Great!

Holy mother of Jesus and all the rest of biblical creatures!
This actually works.
It's like one of those ''GZ YOU WON,CLICK HERE FOR 1.000.000$ REWARD'' things that actually is not a scam

I got win xp pro sp2 (home edited) and it works

from ~170- ~230 down to ~45 - ~80.

If i could,and you would be a hot chick,i'd kiss you!
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Unread 03-21-10, 03:52 PM  
Cairenn
Credendo Vides
 
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WoWInterface Admin

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Aye, the file is safe. It's clean.
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