I use the Denon MC4000 with Djay Pro (Mac version) and I have the following problem:
when the two decks are playing and I try to use both volum/faders at the same time (to mix a song), they total random do a very quick “up-and-down” movement on the screen. Sometimes even on of the decks stops. It is very annoying because the problem comes unexpected and total random. This happens with the native mapping and a costumized mapping.
I have tried to use the Denon MC4000 as a MIDI controller in Mainstage (mapped the Denon faders with two Mainstage channel-faders) and worked well.
I also tried to do some changes in the MIDI preferences from the Djay Pro MC4000 Controller Settings (advanced, change midi channels, etc…)
Any idea or solution? thank you very much.