..on the PC version.
Oddly, the game will infrequently just freeze up entirely for a couple of seconds or so, then resume. It seems to do it most often on those animated loading screens. Crysis 1 had similar issues if I remember correctly.
I'm running a 7870 card.
I would have put this on the PC Crysis 3 forum, but Gamespot decided to close it to read-only.