Could you describe all the algorithms that this happens on?  I wonder if it's a problem with the memory in your H9.

Also, this might not help in your case, but it would be worth resetting your system settings;  you do this by turning your H9 off and then turning it on with the right footswitch and the HotKnob switch pressed (the switch in the upper left hand corner of the H9).  This will reset your system settings but won't affect your presets.

If this doesn't help, creating a video showing the problem might be helpful.