the latency trick

[Ughmahedhurtz]

Whoa. I'm astounded. This registry fix has decreased the apparent lag time on my followers by about 70%. As an example, without the TCP settings above, I'd hit jump on my keyboard and the 4 alts would jump about time my main hit the ground. With the TCP settings, the alts jump when my main is about halfway UP. Targeting delays seem a LOT lower, too.

[qcumber]

I know this is an old thread but I just tried the TcpAckFrequency/TcpNoDelay trick and it changed my latency from 200-220 to 60-70. Took 1 minute to do. :thumbsup:

[Chorizotarian]

Damn I have Vista64.

Not sure if there is any additional performance improvement with this fix AFTER the patch???

There's not... I tested it, just to see. The patch basically removed the Nagle's algorithm (relative of the fisherman) itself.

There was for me (Vista x64). My pings are a consistent 70-90 ms now.

[Eteocles]

I tried this once; I have about 8 or 9 entries in my registry for the connections. I put the tcpack thing in one that had my IP; didn't do shit.

I tried again more recently(When Comcast was being a bitch and the entire southeast US was being routed through a bad 300+ms hop in Sharp's Ridge TN) and put the entry in TWO registry slots that had my IP in it; my pings have been a consistent 30-60ms now, down from 160+.

[d0z3rr]

I'm super skeptical, but will try this when I get home.

[Chorizotarian]

If you want to know more about what it's doing to your computer and why it helps search for the 2 regkey names on microsoft.com. I think there is an article explaining.

[kojak965]

I vouch for this fix still works 21/6/08 im in australia pings are often 300-500 now its normal ping too USA as if i was playing a FPS. Now its 180-230. SOOOO MUCH BETTER TY TY TY TY

THIS SHOULD BE PINED.

It's actually 2 registry changes that need to be done. I noticed a very nice drop in my ping. I've quoted a guide I used to do the changes, If your not comfortable touching your Registry please please please do not do it, this is pretty much the brain of your system and 1 wrong key entry may = PC does not work. If you do in fact make the changes, be very careful triple check!!!

International lag fix
WoW lags, it's not something new if you're playing on servers a bit far away from your country, but don't worry people are fixing it ! Out of all the methods offered to fix the lag on your machine, one of them posted on Elitistjerks forums seems to work very well.

<> <> <> Read this first <> <> <>
1 - It might have side effects, like slowing down your download speed or affecting your performance on other softwares. (In my case, it didn't change anything)
2 - If you're not sure about what you're doing, just don't do it. I don't want to be responsible because you crashed your computer in some way because you wasted your registry.
2.1 - Seriously, if you don't know what you're doing, don't do it. It will be fixed in one or two weeks anyway. (and the official fix won't have any impact on other softwares)
3 - If you don't have the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSMQ\ directory, you can download and apply this file to your registry.
4 - Windows Vista users might want to check this post too.

Source - Elitistjerks.com

"1 - TcpAckFrequency - NOTE if you are running Windows Vista this setting may not have any effect - a hotfix is needed which i'm tracking down. This works fine under Windows XP

Type "regedit" in windows "run.." dialog to bring up registry menu

Then find:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\Tcpip\Parameters\Interfaces\

There will be multiple NIC interfaces listed in there, find the one you use to connect to the internet, there will be several interfaces listed (they have long names like {7DBA6DCA-FFE8-4002-A28F-4D2B57AE8383}. Click each one, the right one will have lots of settings in it and you will see your machines IP address listed there somewhere. Right-click in the right hand pane and add a new DWORD value, name it TcpAckFrequency, then right click the entry and click Modify and assign a value of 1.

You can change it back to 2 (default) at a later stage if it affects your other TCP application performance. it tells windows how many TCP packets to wait before sending ACK. if the value is 1, windows will send ACK every time it receives a TCP package.

2 - TCPNoDelay
This one is pretty simple (Discussed here)

Type "regedit" in windows "run.." dialog to bring up registry menu

Then find:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSMQ\Paramet ers

Right-click in the right hand pane and add a new DWORD value, name it TCPNoDelay, then right click the entry and click Modify and assign a value of 1.

Click Ok and close the registry editor, then reboot your PC."

Basically, this fix is deactivating the Nagle algorithm to improve your ping. If you don't want to do it you can just wait for the 2.3.2 patch as it's supposed to deactivate it too, but I don't think you can test it on PTRs right now because the updated patch notes from the latest PTR Build (7705) are actually for the upcoming build (7710).
Quote from: Hortus (Source)
The patch notes that were included with this build (7705) are actually for the next build (7710).
Once you're done with the technical stuff (it probably won't take more than 1 minute if you're not too bad), you can finally get your reward.


Even if in this case, the fix was used to decrease a very high ping, it seems to work very well on low (~100ms) ping for some people (lowered to ~20 or ~30ms).

[Basilikos]

Note that this is an easy fix and does work well. The TCPNoDelay part DOES NOT apply to Vista, however. Just the first step is required (note that you must verify you have the correct network interface if you have more that one).

[JoeWunsch]

By doing the two registry changes my ping on The Forgotten Coast dropped from 240's to 120-130's.

I recently moved there and on Illidan I had a ping of 70, so I noticed the weird behavior and was shocked when i saw my ping was in the mid 200's.

Much nicer back at a more reasonable number.

[yarr]

can anyone confirm if this actually reduces latency? or does it just drop your listed ping number?