Online Gaming Question:

My computer has got an 8 GB RAM, 2GB Graphics card, AMD 3.5 GHZ.
My question is this ,sometimes during the game, i am getting some lag like it stuck, is it because my connection of the internet isn't good?
I am playing call of duty 4 , and it happens the same to modern warfare 3.
My connection is this:

See original post by Megamon