suddenly having horrible lag

i previously had a great connection whith an n+ router and adapter but for no reason i started getting horrible lag in every game. i did ping test and got 17 which i know is pretty good so im wondering why games are unplayable, especialy considering i didnt before. anyone have any suggestions to fix it.

no ones got anything?

i dont have a firewall but maybe its the router?

how could i check?

nope theres only one other computer and its hardly even used

i hate to bump this again but i really need help with it

I have this problem in COD. With me it is IW.Net so I hear. Your problem may be different. A lot of mysterious crap going on right now.

thats most likely just IW.net, this affects all my games