Reply to Allen & Heath 1D or Traktor Pro S4 Problem?

Hello guys,

I've got a problem with my 1D, on the top knobs i control the "choose FX".
But when i turn that knob to find a the FX i want, traktor doesn't handle it, it's like my music stops for 5mili sec and then starts again, i hope you understand what i mean.
So my questions is, is this a problem with traktor or the 1D?

Thanks in advance