I'm not sure if that's me or the game itself but something happened to my frame-rate in multi-player. I don't have much of a rig but I usually play it on high settings with around 40 fps and today when I started the game everything was OK until I clicked Multi-player - the menu for some reason also had low fps and when I managed to join a match it was even worse and the sound as well, it was constantly braking... It seemed like I had a laptop from the 80s...

Have in mind that I had that 40 fps in multi-player as well before.

Um, I had a problem in MP where my fps droped dramaticaly, allmost to nothing whenever I was shooting. It was my antivirus's fault. Maybe it's the same here. Are you using Nod32?

I use Avast but I'll give that idea a shot when I get back home from work, thanks.