I get this same issue on a 2700k @ 5ghz 16GB 2133CL9 on CF 290x Core unparking utility used unpark, HT on
consistant 120+ fps not sure as i am using Max Variable FPS 120 except for cpu through the roof spike 0-1 fps every 3-4 seconds randomly.
I did have windows auto update on at the time, i am shutting it down to see what happens. doubt it was the culprit unless there have been numourous updates every single damn time I play for a bit
Driver 14.4
Driver Packaging Version 14.41-140902a-175923E
Provider Advanced Micro Devices, Inc.
2D Driver Version 8.01.01.1428
2D Driver File Path /REGISTRY/MACHINE/SYSTEM/ControlSet001/Control/Class/{4d36e968-e325-11ce-bfc1-08002be10318}/0003
Direct3D Version 9.14.10.01067
OpenGL Version 6.14.10.13179
Mantle Driver Version 9.1.10.0034
Mantle API Version 94209
AMD Catalyst Control Center Version 2014.0902.2157.37601
AMD Audio Driver Version 9.0.0.9905
Battlefield 4 can go crazy with spikes, especially if there's overlay programs enabled. I would suggest trying disabling "Origin In Game" and then do a clean boot of your pc http://help.ea.com/en/article/how-to-clean-boot-your-pc/ and see if that helps.
