Hello all. I have a 30 / 5 connection with Roadrunner Time Warner Cable. If I connect my PC directly into my router (PC has Gigabit Ethernet), speedtests that I do to the closest server, my local ISP's speedtest server (http://speedtest.oceanic.com), yield pretty much the advertised 30 Mbps down / 5 Mbps up speed. I also tried some Speedtest.net tests to West Coast servers (I am in Hawaii) and I still get these speeds. However, if I plug my PC into my WRT54Gv4 router with Tomato 1.28 firmware installed, my upload speed stays the same (save for about ~10% router/network overhead), but I lose anywhere between 8 Mbps - 15 Mbps, so I end up getting 15-22 Mbps download speeds. I notice if I reboot both the router and modem, I get 30 Mbps speeds for a short while, but it gradually starts dropping down to lower speeds, eventually "leveling off" at 15. I can just be idle and I still get these speeds - nothing seems to trigger it directly. Is this a fault of my router? I checked to make sure all my cabling is Cat5e, and already tried to do the following: - 30/30/30 reset of router - Messing around with MTUs on both the PC and router - Changing the MAC address of the WAN port and restarting both the router and modem (someone said this worked for them in another forum). - Switching LAN ports PC is connected to. - Switching the cable that's connected from the router's WAN port to the modem. - Forcing my network card and Tomato to negotiate a 100 Full Duplex connection. None of this stuff seems to have helped. My router is overclocked to 250 Mhz. I also have a spare Asus RT-N12 that I recently upgraded to TomatoUSB. Is the 30 Mbit download speed forcing my router to hit its limits? I spoke with someone at Linksys Online Chat Tech Support and they said the port speed of the WAN port is 50 Mbps, which is well above what my current Internet speeds are. Should I just upgrade to the RT-N12 so that I don't have to deal with this or is there some sort of configuration issue on my router or my PC that is causing this? Please remember, if I connect directly to the cable modem, I get full advertised speeds. Your help would be greatly appreciated. I might try flash to stock Linksys firmware and see if that helps, but I really don't want to do that unless I absolutely have to.