Let me start with the good news, a lot of game breaking, "hit task manager" stuff doesn't happen on ps3. Not that it's immune to those bugs, but a lot of that seems to time out and reset. So, when a floater goes falling through the world because your rocket blasted him across the map, he'll keep going, but after 5-10 seconds the camera will swing back. Similarly, unending alien turns and points where there is slow motion(for dramatic camera).. you'll get control of the game back. Looking at it from the outside, it seems people have had to restart the game when these things occur on the pc. And that's it for the good news, really.
Framerate drops quite a bit, never in a place where it detracts from the gameplay. Part of that is because this just doesn't play like Halo, but also because it seems to struggle mostly when there are action shots. So, your guy is taking a shot and there is a close up and there's a lot of shit on screen, it will chug, but you have nothing to input at that point. Perhaps the most embarrassing slow down is when your base really starts to grow. The camera will go from a wide zoom to close regularly, and it always slows down. 5 years to make the game and they couldn't work around that.
I don't know how platform specific the other stuff is, but it's bad. It's only better than Skyrim because it never actually breaks permanently. It's also worth it.
