
DICE just posted some new info regarding fixes, probably inclusive in the first patch:
•Quick match functionality has been improved for consoles
•Squad joining and staying in squads will be fixed in the near future
•Hardcore server availability has been added and now works properly
•Lag and rubber banding has been recently fixed
•Default region settings in server browser: a fix which will be rolled out in the near future
•Game stability has been improved in the latest server patch
•Origin installation and authentication issues: will be fixed in the near future.
You can read the full Battlelog blog post here