I’m experiencing a problem too. It was on all day and now preset 1A2 is completely out of tune. When using it with arpeggiator it plued perfectly in tune, then all of a sudden after being on all day, when playing for example a Cm chord using arpeggiator, there are random notes being triggered which are not included in the chord i’m playing. even different octaves. i turned it off for hours and this one preset is totally different now, hadn’t changed any settings, not saved anything, nothing. Totally flummoxed. Have checked mods, nothing works. Bummed. Factory reset, still doesn’t work.