Don't know what is going on there....
Backlash is done when a change of movement occurs, one axis or in a combination move. Using version 033 and have no problem here.
What Mach version are you using?
Any problems with the axes when backlash comp is not used?
What were you doing when you took the video to make the axis moves?
Are you using a SS or PP?
How about some more info .......
RICH