Midifile Tempo track from Sequencer not steady in NS4

[Henrik2025]

Hi....

Maybe someone knows what I am doing wrong.

I want to make a midifile in Cubase including
- program change
- control changes (synth cutoff etc)
- tempo track (so that I can use arpeggiator and effect delays, pump ... in sync with the song

Program change and control changes are all good and the NS4 is responding correctly
Tempotrack is also recognized.... but as soon as incomming control changes occur the tempo begins to act funny... up and down +/- 10
So therefore my chords / arpeggiators get out of sync...

The display NS4 master clock says "Tempo (midi) - like it should.

The midi / audio player is a M-Live BBEAT PRO - in the song there is 4 audio tracks and the miditrack I create in cubase.
BBEAT is set to Midi clock enable so it is sending out the tempo from the midifile.

NS4 set to global channel 12
Midifile content is all channel 12

I tried making midi 0 and also midi 1 files.
I tried setting time signatur in cubase to seconds and bars/beats.

Is the NS4 not capable of receiving both tempotrack and CC data at the same time?