DJM900NXS2 Pro Link Issue with effects

Hi, when I connect my CDJ2000NXS2's with only each other, the FX works as expected (for example 1/2 beat delay, puts the delay exactly in between the beats).  However when I connect the cdj's to a network hub and then into my djm900nxs2 the delay and other effects does not seem to be aligned.  Auto and quantize is turned ON on the xpad.

Any ideas why?  I would expect the complete opposite to be the case if anything was to go wrong.