Freezes the picture and sound governance remain (Doom (2016))

In a random moment may freeze the picture and sound governance remain. Puntoswitcher does not help, run as admin identity; compatible with g, the acceleration components on the bus, disabling the pagefile is generally not allowed to go to level.
Specs of the comp:
CPU: Intel Core 2 Quad Q6600 (overclocked to 2.7 GHz)
Mother: Gigabyte GA-EP43-DDS3LR
RAM: large 6GB DDR2 (overclocked to 900 MHz)
Video card: ASUS SILENT GT1030
Storage: IDE 200GB(SYSTEM). SATA 80GB (THEN DOOM)
But overall, on average, 70-90 fps preset time between battles in the battle sags to 40-50