Could you please provide us some details about your PC hardware and internet connection? Especially your modem, network card and ISP could help us to investigate your issue. What applications are usually running in your background while playing Battlefield 4?
Close the origin client and go directly to you origin folder C:\Program Files\Origin Games. Run the origin.exe in this folder with a rightclick -> run as administrator.
Try to deactivate your firewall/antivirus software and/or check the online ports of your connection:
TCP: 80, 443, 9988, 20000-20100, 22990, 17502, 42127
UDP: 3659, 14000-14016, 22990-23006, 25200-25300
For specific instructions on how to open your ports, please visit http://www.portforward.com/ or contact your router manufacturer.
You should re-install your PunkBuster software as well as your ESN sonar application.
Cheers
Basti
