Video shows Battlefield 4 netcode in worst case scenario
One of the biggest issues Battlefield 4 faces right now, aside from the crashes (something that DICE has improved), is the netcode and how the game handles lag. And we’ve seen plenty of examples of the netcode problems in Battlefield 4 (like a strange bug that apparently duplicates a player).
While most players have occasional and minor netcode problems, some are experiencing the issues on a much larger level. The above video shows what can happen when the netcode / lag problems really get out of hand. DICE has previously said that the netcode is the number one issue at the moment, and that the entire team is currently working to stabilize Battlefield 4.
For a simple explanation of what “netcode” / lag actually is, check out the GIF below (source).