I noticed this a few hours ago when I went to have a quick 5-minute game of Battlefield 4, that there is a large 1GB+ patch available. This patch will reportedly address many of the concerns gamers have, with crashes and server failures, and more.
There's some patch notes here you can skim over, but we should see a big fix in overall stability of BF4 for one. Secondly, network syncing problems should hopefully be fixed, which should have gamers smiling once again. DICE is aware of the issues, and is continuing to work around the clock to address them. DICE has also fixed some holes up on the server side of things, which should give more overall stability to BF4 multiplayer.