I play mainly Crash Site and since the patch Skyline has been terrible frame rate wise. Before the patch you would only get a noticeable framerate drop whenever there was an orbital strike but now it is happening all the time. The framerate drops are even worse than when the orbital strike is out and seems to be focused around the crash pod areas (perhaps because of all the action?). I've only played Skyline on Crash Site since the patch so I don't know if the other game modes are affected. The rest of the maps are fine.
Hmm, I'll check again today to see if it's better but it really was terrible in the framerate area last night. Just reiterating that this was only on Crash Site.