DDJ - 400

Hey, i just buy a DDJ - 400 before some days and i just test it for a little bit.

When i set it up on my Laptop everything works fine. After half hour some of the effects doesn't work (Actually everything till filter , after that all the others works fine) Secondly i would like to inform me how i can fix that when i grow up the tempo of a song the vocals pitching, on my last controller (DDJ Ergo) there was a button to fix that.but here i can't find something on settings section.

Thanks in advance