I've experienced the crash once. Not terrible but obviously never good to have a crash in your game.
I've encountered some behaviour I don't understand in DS2 but I'm not sure if it's typical game mechanics or something with the port. In the ruins stage as Lei, my options sometimes stop generating rings while they ride the falling stone blocks which costs me score and messes up my recharges. Not sure if this happens elsewhere but it is very noticeable in this stage. Also, sometimes after taking a hit during a boss point will stop generating red rings even after dying again or continuing (I do generate them while bombing, though). I don't remember either of these happening on the 360 version, but it has been a long time since I spent time with that.
Is there a mechanic related to these occurrences that I should be planning around, or are these bugs similar to the rapid shot getting disabled during the Tamecos fight?