My frame rate took a nose dive with the 2.04 release.
It picked up a bit with the Patch 1, but it is still not as good as before the 2.04 release.
With 2.04 I had times of down to 12 fps. With the Patch I still get times of 19 to 20 fps, but most of the time I am at 56 fps now
I have a Athlon 3400+ with a 256MB ATI 700X video card.
I used to play at 1200X960 res with 56+ fps before 2.04, hardly anything below 56 even in massive furballs