Since I found out how to fight the dragon I want to share it:
-> My issue was that I noticed quite bad timing between my DAW (Bitwig) and my MPC X setting them up all together along with my hardware synths.
-> The wizardry was to buy an E-RM multiclock to make them all sing together.
Problem was that I need my MPC X to record audio tracks in slave mode, which (unbelievable) can´t record when getting sync´d by MIDI clock from another piece of gear!
-> Now the trick:
After starting the MPC from DAW transport (and all is sync´d beautifully) - switch the SYNC IN from Midiclock to MTC in the MPC. Now open the looper (while MPC running) and you are able to record perfectly in sync.
This way I can record super tight arpeggios and sequences into the MPC.
Hope it´s not too confusing - and hope for an Update of the MPC anyway - that could fix it perhaps.
I know there are people outthere which need exactly this feature and being disappointed from Akai support
