Okay, I've seen this issue many times before and whilst the posted method works sometimes, it's very hit and miss. On my previous ISP's forums, they posted a fix for these kinds of routers and it always worked. It doesn't require messing with master server files at all. It's entirely router based.
NOTE: Neither I or the person who originally posted this guide are responsible if you break or otherwise hinder/render your router inoperable by following this guide.
This fix should correct the following issues:
* Servers in Steam/in Steam games suffer ping 'spikes'
* Difficulty/Inability to connect to servers
* Use of Steam/Steam games causes the BeBox to freeze/stall/restart (crash)
* Loss of connection to servers, or timeouts
* Poor performance ('lag') in servers
This fix involves editing the user.ini file to change configuration of the router.
1. Follow this link to the router configuartion page:
http://192.168.1.254/cgi/b/bandr/?ce=1&be=0&l0=0&l1=1&tid=BACKUP_RESTORE
*NOTE* This may be different for your router. You should be looking for a page which allows the saving (backing up) and uploading of config files.
2.Enter username & password (default is Administrator, with the password left blank or the S/N from the bottom of the router - without the bit in () )
3. Select Backup Configuration Now.... Don't close this window
You should now have a user.ini file containing your router configuration options.
4. Open it in Notepad. Go to Edit , Find and search for appconfig application=GAME(UDP)
You should see three entries regarding UDP. You need to change them to:
appconfig application=GAME(UDP) trace=enabled timeout=3
appconfig application=CONE(UDP) trace=enabled timeout=3
appconfig application=LOOSE(UDP) trace=enabled timeout=3
Now again, go to Edit , Find and this time search for timerconfig timer=udpidle
You should change this entry to:
timerconfig timer=udpidle value=3
5. Save that user.ini file to the desktop. Switch back to the router page and select Restore Configuration Now (or the equivalent "Upload Configuration" button)....
6. Use the router dialog to locate and select the user.ini file that you have modified. The router should upload the file.
7. Once configuration is uploaded, restart your router and all 'Connection Problem' or Server list crashes or Restarting of the router due to UDP flooding in CSS and other games should be FIXED.
This fixes the steam games issue as posted here, as well as issues in Killing Floor, etc.
Mods: I know this a monumental bump, but this is for the betterment of everyone who has this issue.
Users: Please try this out and let me know if it works.