Problem in Live mode

When I turn on the voice changer in live mode, my CPU goes to 100% and crash all things on my PC... This problem started 2 days ago after I started using this mode, previously this program run properly, even in live mode. don't know why the software started crashing on my PC

REPEATING THE LIVE MODE WORKED PROPERLY, BUT OUT OF NOWHERE STARTED TO LEAVE MY PC WITH CPU USAGE AT 100%