Not answer key (The Witcher 3: Wild Hunt)

Hi all.
Such a disaster. Played earlier. held three times a game, everything was OK. Now again sat down, but the keys often don't respond.. Neither the keyboard nor the mouse. Either nothing was happening, no matter how much you push, or the witch begins to run stupid not to stop it.. any one click is not responding. And so it goes 5 seconds - 10. It often happens in battle and the last save was far back and made do, in principle, play after this hunt already.

Help solve the problem. Thank you.