Quick question about steam

[Princey]

Does Steam download game data on the fly while playing games?

 

[Princey]

Its just that I seem to be getting stuttering in Half Life 2 when a new sound is played, like speech.

 

[Princey]

Ok just tried playing through Lost Coast and I'm getting very bad stutturing whenever a new sound file is played. It actually pauses the game for a second or two. The game cache is defragmented and so is the Hard Drive.