absolutely nothing to do with polyphony, everything to do with a choice by the programmer appropriate for the style. The string pad has been played each measure in a melody chord follow mode, thus changing chords within the measure requires a wait for the next measure for the strings to come back in. Transfer the style to the composer, clear the track, play the strings with the same notes held down for the four measures of the pattern in a chord mode, and changing chords within the pattern will produce no pauses in the string sound but will be more bland subjectively.