So, I was hoping this problem would have gone away by now either by driver updates or game updates but it's still a problem which keeps from playing multiplayer.... which is sad because I really enjoy the multiplayer.

The problem is this:

First game everything is fine.. runs smooth as butter with all settings cranked....

The second match the frames per second drops like a rock and the game looks like a slideshow. Even the menu system is "laggy" at this point.

If I exit the game and relaunch I can play one MP match again, but just like clockwork the next match become unplayable.

Has anyone found a fix for this? I've been searching around but dissapointingly haven't found anything yet...

have you tried:

1.) lowering your resolution? what is at currently?
2.) checking your gpu temps? if it overheats it will slow down
3.) alt-tabing and alt tabing back, if this increases frames back to normal then your card might not have enough vram
4.) toggle windowed mode on and off, toggle v-sync on and off, some people have reported this can add 5-20 frames per second.