As you are reading this, we are rolling out a new patch for the Beta on PC to address some of the crashes and performance issues some players have been experiencing.

Read on for the full details, and let us know how this works for you in this thread – your feedback is hugely helpful to us.

Updates in Beta Patch #2 for PC (Oct 10)
-Two fixes for the long/permanent loading times
-Various improvements in performance for users running quad core or six core CPU's
-Fixed a crash that happened for some dual core CPU users after loading
-Fixed a crash relating to DirectX10 graphics cards
-Various stability fixes
-Various crash fixes

http://battlelog.battlefield.com/bf4/forum/threadview/2955065214565960777/