I'd like to buy one of these little machines (EK-50), and I was watching some you tube videos. I noticed the guy in the video used the part mute section for changing sounds, instead of programming the set list section (4 buttons)x (10 banks). So I asked him what's the reason, he said that there is a glitch going from one set list to the next, the rhythm just stops for a millisecond.

Any idea what is the reason for this glitch?

I'd like to get one of these babies, but with this issue, I'm kind of reluctant.