I very much doubt that it has anything to do with registration.

More information please? Driver: ASIO / MME?
RealTracks or MIDI or both?
Once it occurs, is it repeatable at only specific bars?
etc


BIAB & RB2026 Win.(Audiophile), Windows 10 Pro & Windows 11, Cakewalk Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Session Keys Grand S & Electric R, Kontakt, Focusrite 18i20, KetronSD2, NS40M, Pioneer Active Monitors.