This is a fairly long article, and not everybody will be interested. I only pasted the intro + link. The depressing aspect is that EA claims that several issues were improved by the last patch, yet the bugs mentioned actually got worse. 
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03.03.14
We at DICE are committed to improving the overall Battlefield 4 multiplayer experience for our players. Some issues, commonly referenced in conjunction to “netcode” are preventing Battlefield 4 from performing optimally for everyone, and with this post we would like to explain what we are doing to address these problems.
http://blogs.battlefield.com/2014/03...etcode-in-bf4/
=============
03.03.14
We at DICE are committed to improving the overall Battlefield 4 multiplayer experience for our players. Some issues, commonly referenced in conjunction to “netcode” are preventing Battlefield 4 from performing optimally for everyone, and with this post we would like to explain what we are doing to address these problems.
http://blogs.battlefield.com/2014/03...etcode-in-bf4/
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