Playback tempo too slow or inaccurate
On my system, the attached file Tempo120.mscz plays back at incorrect tempo. Instead of 120 bpm, the result is about 110 bpm.
WAV export renders it at the correct 120 bpm. In the following chart, I've compared the rendered version (top) with a recording of MuseScore's playback (bottom):
Audio files attached.
OS: macOS 10.14, Arch.: x86_64, MuseScore version (64-bit): 184.108.40.2067915347, revision: 1977cb3