I just installed my GTX 680 (upgraded from a GTS 250). Went to play Crysis and noticed my fps was stuck @ 24.
I read on the net that it's ppl with HDTVs and some fixes were going back and forth from window to fullscreen or creating your own resolution, but that didn't work for me. Plus, most if not all the threads or whatever were about the 200 series GPUs.
If I go to window mode the fps will be normal.
I've also read that other games like Crysis 2 does this.