I only have SE so this might exist in pro, but I have a korg MS2000, and apparently it has a known bug in the firmware which makes the arpeggiator and motion sequencer run a bit late. It's constantly behind by like 30-40 ms. If I'm working with only plugins and the ms2000, it not an issue as I slap a sample delay on the plugs and it's all groovy, but when I'm using other hardware there's not a native way to delay them all by a bit... For now midipipe does the trick, but that makes me grumpy.
next time I'm in NM I'll buy you a beer Jim.