Have tried a number of things. Fiddled some with MTU settings which seemed to help a little, bypassed router again... etc. Seem's as though the biggest improvement came with uninstalling Comodo Internet Security (Free version). Before the improvement, I had tried running Comodo in "Game Mode" as well as exiting the program from the start menu (and after disabling the Firewall). So naturally... could be MTU, could be Comodo, could be some other crap.
Skuzzy
Modem is ISP provided Comtrend and is at least 5yrs old.. which I then run through an older Linksys WirelessG Router. Would I be better off with a ADSL Modem/Router Combo anyway? (newer and all).