Hello all,
This will be due to the Akamai Content Delivery system Origin uses for it's content distribution.
The only help I can give you is to read and follow these guidelines linked here http://forum.ea.com/eaforum/posts/list/7576794.page
Note: Even after following the guidelines linked above your speed will probably not change.
Tip: After the download is complete it's advised to make a backup/save of the Battlefield 3 folder which is located at C:\Program Files (x86)\Origin Games\Battlefield 3
You could then use the backup/save of the Battlefield 3 folder in future to quickly install Battlefield 3 following the below instructions.
Installing Battlefield 3 using a backup/save of the Battlefield 3 folder!
Run/Open the Origin client click the My Games tab/button.
Within the Origin client right click Battlefield 3 and select Download.
When the Battlefield 3 download has started select Pause.
Locate the folder "C:\Program Files (x86)\Origin Games".
Move/Drag the Battlefield 3 Folder you have saved into the folder "C:\Program Files (x86)\Origin Games".
If asked to Replace/Overwrite click Yes.
Resume the Download in the Origin client.
Done!
Remember Accept as Solution & add some XP if this answered the question!
F