cpu problem with ddj sx2

hi friends g a big worries with rekordbox DJ after some time of use of the CPU rises software background and the sound of a distort what it is please ? all my applications other than rekordbox DJ are close and this always happens when loading a song or turn the search dial my ddjsx2 or even doing a title search in the software search option I exit test mode a Pro for thinking that its going changes, but no !!! review to help me please