*** SOLVED! It was the length of the trigger signal from my SWT16+
No more dropping Samples now! ***

Hello, my Bitbox wont' play constantly played samples. It swallows sporadically every now and then some of the triggered Drums from the Robaux SWT16+.
Doepfer A-100 Monster Base with PSU3.
Please check it on my YouTube for a Time Stamp for every drop: