Arpeggio playback of the spread number doesn't work well on pitched percussion (Not Muse Sounds)

[erinic04]

Issue type

General playback bug

Bug description

If you have an arpeggio on a mallet instrument part, there is currently no way to adjust the playback speed of the arpeggio. The "Spread Delay" option does almost nothing at all. This only effects non Muse Sounds sounds, as muse sounds works normally as far as I can tell

Steps to reproduce

1. Create a score with a mallet instrument
2. Add a chord with arpeggio symbol
3. Adjust the spread delay of the arpeggio
4. See that it changes basically nothing about the playback

Screenshots/Screen recordings

2024-06-18.14-28-41.mp4

MuseScore Version

OS: Windows 10 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.3.2-241630831, revision: github-musescore-musescore-22b46f2

Regression

Yes, this used to work in MuseScore 3.x and now is broken

Operating system

Reported on Windows 11

Additional context

This might have worked on a previous version of Musescore 4, but I don't know
The number does have some effect on the playback with these instruments, but not nearly as much as it does on other instruments, or enough to really be useful