i have a bass sound i turn the arpeggiator onto up down and sync at 1/4 notes ( why it displays hz and not tempo is beyond me when it's not in sync) it will play fine for 3 bars or so the there is an audible change like the arp is adding a note and throws the pattern out of whack .. about 12 bars later it swings back into time.
it's like every third bar the arpeggiator spits out 17 steps instead of 16 if that makes sense..
i have no mod routings the lfo's are synced to host i tried a number of different things to try and stop it doing it to no avail .
it happens on a number of presets aswell
mac osx 10.6.8, ableton live 8.2.2