Tempo drop when sync with ableton and send CC with Launch controlXL

Hi everyone,

I’ve a little problem with my set up which is :

Ableton master clock send to Digitakt thru a iConnectivity MIO10 plug in USB Host. I also control parameter of the digitakt with a lauchcontrolXL as well plugged in USB Host in the midi interface.

When ableton is not open all is ok, i can do what i want on DT with the midi controller. But as soon i want to synchronise the DT with ableton every time i use more than one knob or fader at the same time with de lauchcontrolXL tempo drop on DT but not on ableton.

Does anyone had this kind of issue ?

Kind regards