Here is my problem , i have an x4 750k, gigabyte r9 270 (oced to 1100mhz core clock , memory stock) 8gb ram 1600mhz , 1tb wd caviar blue and my fps in medium settings drops to 30 in teamfights (vsync is off). No problems in other games , Bioshock infinite 100 fps at ultra settings .My drivers are up to date do you think that my cpu is bottlenecking the gpu?