YES. I seriously hate threads with people asking about how a game will run on their system when there are DEMO's AVAILABLE.
problem is..
The single player in the game works flawless.
No lag no shutter, everything max'd out... works flawlessly.
The moment you got on a server.. Oh man.. shutters... lags..
Valve needs to fix the servers b4 you buy this game.
Single player is only fun for a while, its the coop that makes this game rock.
And right now me as well as a lot of my friends are having a hell of a time using a dedicated server.
We have to use local server to fix that issue. But then we get ping lag if too many people are on 1 connection.