Lock-screen and total audio destruction freezing


So I’ve been playing Evolve like ridiculously and countless times either before, during, or after a match, it would freeze up my system to where the screen locks up and the audio sounds like a mining drill on steroids. I have not one but TWO Geforce GTX 880Ms with SLI technology and I’ve made numerous adjustments with the control panel to help stop or slow this annoying endeavor but made no progress. Please fix this issue before it causes me to loose everything on my harddrive and so I can enjoy a game where I haven’t been excited about a title since Dead Space 2. Please fix this problem. Please and thank you.