Резкое падение ФПС БФ4

I5 4590 Asus H81M-K Deepcool GAMMAXX 400 Gigabyte GTX 770 OC 2Gb Kingston 8Gb DDR3 1600 Smartbuy ignition 2 120Gb Seagate barracuda 7200.12 Smartbuy ignition 2 120Gb Thermaltake toughpower 700w Internet 40Mb/s