[MU4 Issue] Solo cello sound has very slow attack

Describe the bug
When comparing the solo cello sound to the other solo violin family sounds, the attack is noticeably slower and reduces its effective relative volume
To Reproduce
Steps to reproduce the behavior:

1. Create a new string quartet score, tempo ~80 bpm
2. Add some 1/4 notes low in the range in the violin part (e.g. a G major scale starting on the bottom string)
3. In a later measure, add some 1/4 notes low in the range in the cello part (e.g. C major scale starting on the bottom string)
4. Play back score
5. Observe that violin sound envelope has reasonably quick attack and a smooth legato sound, but each cello note seems to "fade in" gradually due to a slow attack. In faster passages this makes the cello noticeably quieter than other parts as it never has time to reach the peak level in the envelope.

Expected behavior
Attack for solo cello should match violin & viola, as it does in MuseScore 3.

Screenshots
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Platform information
Windows 11

Additional context
Add any other context about the problem here.

Start by reproducing the playback comparison in MuseScore on Windows 11 using a string quartet at about 80 bpm, as described in the reproduction steps. Compare the solo cello attack with the violin and viola, and consider the issue done when low-register cello quarter notes reach their intended attack and relative volume without fading in during faster passages.