Reply to Traktor load track freeze?

Hello all recently I have noticed after a couple hours of play When I load a track from my s4 to traktor , only the cue points load visibly on screen but not the wave form and it freezes for about 30 seconds...

It has always after 30 seconds resumed to normal but I had a gig about 2 weeks ago where it froze for about 1 minute and it was pretty freaky since the party was fully hype at peak time..

I have noticed it does it more when I plug my laptop charger back in since my laptop is dying, any one have this happen? any suggestions ?