I've had great luck the past couple of days, with no mp crashes, but an overall consistent rubberbanding issue on some of the more intense matches.
That being said, I can tell others are having more significant issues. There have been many times where people have got the jump on me with a close quarters weapon and I still pull out a kill with my M416. The new fps has helped my accuracy significantly though, as I was doing pretty mediocre on the PS3 with a DS4, but I feel almost overconfident now.
Banding makes flying very difficult, but I mainly stick to infantry anyway.
Grouping with friends is still a cluster though. Was working great on PS3, as it was prioritizing us correctly. Now it seems to almost always put us on opposing teams even if the teams aren't balanced.