bottleneck 290

kalhspera. exw provlhma me to pc mou enw  paizw battlefield 4 kanei kati pagomata  kai meta apo kana misi ora me kanei restart.  bottleneck mporei na se svisi to pc? mou to ekane pio palia alla  spania twra pio sixna ? h einai apo drivers prepei na exo ola ta driver h mono ta kainourgia version. ama pao se AMD Athlon X4 860K meta tha kanei pali bottleneck? me thermoktasia eimai 70c cpu gpu 81c
ta specs:
amd 6800k 4.1  
asrock fm2a88x extreme 4+ 
G.Skill 2133C10D-8GAB is a dual-channel
asus radeon r9 290 direct cu ii 
Corsair Builder Series CX600 V2 80 PLUS Bronze 
SanDisk Ultra II SSD 120 
WD 1TB WD10EZEX Blue SA3
windows 7 ultimate  64bit