SFZ not producing any sound on fast or dense passages during playback

Hi, I'm using three SFZ (Salamander v3 retuned, Flute PERF from Virtual Playing Orchestra and Choir PERF from Virtual Playing Orchestra) in some melodies. During playback, I noticed the choir stopped at bar 3 and the piano stalled on a B flat for a moment. I tried decreasing the tempo and problem was solved except I want the tempo to be around 120 bpm and still have a good playback. Is there a way to do that in Musescore 2.2?
The melodies mentioned are below.