Rekordbox Performance 4.0.4 freezing while Playing tracks

Any Idea why Rekordbox Performance 4.04 is "freezing" the waveform part and latency issues while searching tracks or jumping back and forth between playlist and listening to Cue tracks in the cue feature?

Once I stop searching or cuing the freeze/ latency stops and works normal,

do I have to change some settings in my MAC, software or hardware (DJM-900NXS, CDJ2000NXS)?

Thanks