Internet Slow Through Router

I have Comcast 10mbps internet service. When connected through my router my service is VERY slow. Resetting router and modem solves the problem temporarily (about 2-10min)

My internet speed (as tested at speedtest.net):
-Using my Netgear WRG614 v9 wireless router = 250-900kbp & 600ms ping
-Directly connected to my cable modem = 10-15mbps & 60ms ping

I have five PCs on my network which reproduce this problem (3 wireless and 2 wired.) Comcast sent out a technician who checked my line and replaced my modem. Nothing fixed.

Here's what I have tried:
-Upgraded to latest Netgear firmware
-Replaced Netgear WRG614 v9 with Linksys WRT54g2
-Installed DD-WRT firmware on Linksys WRT54g2
-Cloned MAC address of my PCs (the alternate MAC is supposed to register the modem on the network differently and possibly route the traffic differently)
-Adjusted MTU settings
-Replaced Ethernet Cables
-Put distance between equipment (Electrical Noise)
-Changed local ip address range
-Disabled wireless

ALSO: When I have the MAC address of my router cloned to my PC I can switch the ethernet cord between the modem and my PC and still remain online without having to restart the modem or router. Immediately upon switching to the router (BOTH The Netgear and Linksys) my speed is significantly slower.

Here are just a few of threads I have checked out

MTU Setting
http://www.tomshardware.com/forum/ [...] ter-speeds
Electrical Noise
http://www.speedguide.net/read_articles.php?id=1885

I have spent over 10 hours trying to solve this problem. Any suggestions?

Hey jtreibick,

I am experiencing the same exact problem you are, with the Linksys WRT54G and DD-wrt. Aside from MAC adress cloning, our setup looks the same. I'm connected currently with only 1 computer, but I have several I need to connect. I know it's been a long time since you post this, but maybe you found a solution?




Thanks in advance,
Dmz

Actually - I just posted something similar - I traced my issue to the firewall in my router. Have you tried turning off the firewall to see if that might be the issue.

I'm trying to find alternative routers that have a better in-unit firewall or faster processor, I don't want to put a standalone box out there for that purpose - I will if necessary - but don't want to. My router is an Linksys RVL200 and I drop from 9.8Mb to 3.5Mb when the firewall is turned on (it's always on btw - I just turn it off when testing for this problem.)

-ahg