Tech/Networking question

[FoxxHound]

Any tech/networking/IT people out there? I have been having massive ping spikes in all of my online games TF2, DoTA2, Nosgoth, SC II, CS, League of Legends, Archeage, Rift, ESO, EQ, etc.. (Each one has a different kind of lag. Example TF2 just freezes or rubberbands me. DoTA everything else moves, but my hero freezes or is delayed. In LoL I get massive stutter or complete freeze. (Each indicate ping or packetloss or both being the problem)
I don't seem to have lag/buffering problems for shows/youtube/movies. I have even run multiple speed tests/pingtest/packet loss tests. From speedtest.net, pingtest.net, to running the good ole command prompt. All shows normal DL/Upload speed, and no packet loss/jitter.
I have tried as many remedies as I can think of to no avail. I have done the make sure everything is plugged in, and snug. Resetting/turning off, and on the router. Called ISP, and they said everything looked fine. I tried port forwarding for the games I play. I have turned off firewall/antivirus programs temporarily to see if there was a change (obviously there wasn't). I tried updating my drivers, and all seem to be up to date. I thought it could be the router, but my roommate isn't have any problems. I have even done multiple virus/malware scans on my computer. Nothing seems to be working. Any help/suggestions would be greatly appreciated.