I have been experiencing high ping/latency for a bit more than a week. The ping can go around 400-700 in Team Fortress 2. I have been teleporting and delayed voice commands. When I am also playing, it feels all shaky. The router I have been using is a Cisco Linksys WRT54G Router which I purchased 7 years ago and is actively connected to two computers. The modem I am using is a Touchstone TM602A. Can you tell me how to fix this problem? Thanks in advance!