Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Changed MTU size, reverted back to default, noticable lag now

07 Jan 2013   #1
silentnelite

MS Windows 7 Home Premium 64-bit SP1
 
 
Changed MTU size, reverted back to default, noticable lag now

Hi, well first of all the reason I changed it was because I tried to optimize (my mistake) by reducing it. My router is set to 1365 MTU manually after a support tech from Linksys asked me to change it for a previous problem. I used the "netsh interface ipv4 set subinterface "Wireless Network connection" mtu=nnnn store=persistent" command to change it around to find what MTU Windows uses automatically. It was set at 1500 (for both LAN and WLAN). I set the WLAN to 1365 to see how it would perform, didn't see a noticable change I believe so I switched back. Now I see a slight lag when loading sites. I also compared the time against another pc that I did not tamper with (which by default was set to 1500) and that one worked normally.

I fear I may have overridden Windows defaults for handling MTU since after manually setting it to 1500 (was originally 1500 when it was untouched) it lags a little. For the time being I set it to 1365 to get the performance that I normally got with default settings.

My question is if it's possible to get the original performance back with the MTU set back to what it was originally (1500)?

Also I learned my lesson and won't be trying to change settings without first making sure they are completely reversible. Also I'd like to do this without using System Restore.

Thanks in advance.


My System SpecsSystem Spec
.
09 Jan 2013   #2
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

What browser do you use.
My System SpecsSystem Spec
09 Jan 2013   #3
silentnelite

MS Windows 7 Home Premium 64-bit SP1
 
 

Firefox 18. Also where in the adapter settings did you say I could find the Mbps, I didn't know that was possible from there. From online speed tests I get ~15 Mbps and down and 2 Mbps up.
My System SpecsSystem Spec
.

Reply

 Changed MTU size, reverted back to default, noticable lag now




Thread Tools




Similar help and support threads
Thread Forum
365 changed Word default from '10 to '16--can't change back?
We installed 365 on my wife's machine strictly to resolve an Outlook 2010 problem with intention to later, but not yet, remove Office 2010. At the moment she's using Word and Excel 2010. However, 365 changed the default Word from 2010 to 2016. If you visit 'Change default programs' instead...
Microsoft Office
mspaint default tool and size changed
When I used to open mspaint the pencil was the default tool and the default size was the thinnest. Now it defaults to the brush with a default size one step up from thinnest. Something changed but I donít know what. Is it possible to get it to default on something like the pencil or line,...
Software
WMP Default Player Size Changed
No clue what happened, but WMP used to automatically open in a small player, but the other day it started opening in a massive window & now I can't get it to change back to opening in a small window by default Can't find anything online that tells you how to change the default player size for...
Media Center
Changed text file default open and cant change it back
So I was looking into making a batch file, followed some bad advice, and set my notepad files to open with cmd. Now even if I go and set default program, it does not save it and will open with cmd the 2nd time. It seems the option to always use the selected type of program is grayed out. How can I...
Software
System fonts too small after reverting back to default font size
First time posting, I hope I got this in the right section. My situation is: For part of my IT coursework I had to explain and show evidence of tweaks that could be done in Windows 7 that could help visually impaired users use the computer better, and one of the ways I explained was about...
General Discussion


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 06:38.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App