Ror Randolla and everyone else frustrated with BF4 (Randolla see fix for your error further down):
 
I am running in 32-bit mode and it is MUCH BETTER!!!  In 64-bit mode, the game would crash every 15 to 30 minutes.  In 32-bit mode, it has not crashed once yet!
 
First of all just so I can be sure you are aware, x86 is 32-bit and x64 is 64-bit.
 
There are two executable versions of the game as you can see below.  But the 64-bit version (bf4.exe) will run by default in a 64-bit operating system unless you change the option in Origin.  You can't just open bf4_x86.exe and expect it to run the 32-bit version.  The following image is for presentation purposes only just to show you that there are two different versions.

 
 
By default, in a 64-bit operating system, origin will execute the 64-bit version. You can manually select the 32-bit version instead in Origin.
Make sure BF4 and Battlelog are closed first.  Then, right-click the game in Origin and select "Game Properties".  Then, choose the 32-bit (x86) version as default and hit Apply.

 
Then, play the game.  You can be sure that the 32-bit version is being used by looking in your Windows Task Manager.  Go to Processes, widen the Image Name column so you can see the full name listed, and see that "*32" is listed after the BF4 process which confirms that BF4 is now running in 32-bit mode.
 
If you get an error after switching to 32-bit mode (Randolla), you need to install the 32-bit version of the C environment.  This is the error you might get:

 
Simply install the 32-bit (x86) C environment as administrator which is located in the C:\Program Files (x86)\Origin Games\Battlefield 4\__Installer\vc\vc2012Update3\redist folder.  Right-click vcredist_x86.exe and select "run as administrator".

 
Enjoy!
 
Much less crashing (not once for me so far) and better!  :)