The performance is bad tbh in comparison with the first game from 6 years ago.
Then I read this guide (some of it is in german)
http://steamcommunity.com/sharedfiles/filedetails/?id=156776308#103021
Essentially what it's saying is that the replay recording is draining your pc's resources. This guys specs were somewhat similar to my own and I assume they are for most of the people that are having issues. My specs on a build I did myself in 2009:
Core I7
6 GB of RAM
AMD 7850
ASUS P6T Turbo
While the 7850 isn't the greatest card in the world and 6 gigs of ram is mediocre atm, there is not reason that this game shouldn't run smoothly on mine and other rigs at 50-60 fps. Nothing in this game is, graphically speaking, that special.
back to the topic at hand - WHY DOES THE REPLAY RECORDING SYSTEM DRAIN RESOURCES LIKE THIS WHEN THE SYSTEM FROM THE 1st GAME FROM 6 YEARS AGO WORKED FINE???? WHY CAN'T I SEE THE CHAT????
It's the things like this that are really disappointing in this game.