DDJ Ergo -- Song skips while recording but skipping cant be heard through headphones while mixing

Hello All, 

I have a very pesky and reappearing issue while I record a set with ERGO V and Traktor Pro 2's build in recording function. As I am mixing and recording everything sounds fine but once I am done and listen to the produced WAV file, in lets say a 50 minute set I would hear maybe 3 or 5 "jumps" as if the song repeats a beat at different parts of the set-- similar sound to the one produced back in the day when a needle would jump on vinyl. 

Is this a latency issue? I currently have it under 10ms.

Is this something else?

I also plugged the master out of DDJ into my M-Audio Pre2 interface on my desktop PC and recorded another set that way, thinking that maybe there was a glitch with Traktor's internal recording function but the "jumps" were recorded there also even though I CANNOT hear any "jumps" as I mix.

I would appreciate your comments/solutions on this.

 Thanks!

System Specs: 8GB Ram / Intel i5/ Win 8