Lags or something else help diminish who knows! (Warface)

I go in varfeys, then launch any game, pvp, pve, etc etc
Everything is run. Play play, like all the rules, then suddenly the screen freezes and becomes black. Then he is this black screen 5-10 seconds and disappears, and so the whole game is that sound anyone know when the black screen appears, and it happens that the screen is black but the sound is, ie the game works, just gets a black screen. Look like, a computer the child could use it pull, and what the hell can not understand, searched through the entire Internet watching, the website is not what I have found really working way to resolve this thing, all hope at Toko you! Help diminish.