Yeah i would have to disagree with the comment saying that the AMD processor isnt good enough for the mtp.
I had an old AMD powered Toshiba laptop that i used to use for gigging all the time on Traktor…and Traktor is a lot more resource intensive than VDJ.
I suggest going to the Native instruments website and download the 30 day trial of Traktor pro and if Traktor is working on it with no problems then its not a processor problem…it is most likely a driver problem…or it could be a latency issue with VDJ.
Have you looked at the sampling rates that you have set for VDJ? Sometimes DJ programs will set your buffer to like 24 rather than 192 or 256.
This issue happens to me once in a while on Traktor where my sample rate normally at 192 will get reset to 32 and itll cause all sorts of problems.
As well take a look into the VDJ and see if they have a multicore support or not.