Midi files are playing irregularly

[jelmer3000]

The songs are played in a very strange "shuffled" way at least in Unity editor on a beefy macbook. It seems that the timing between notes is "off". As of played by someone who is really not precise at playing, or who is simply drunk (while still hitting the correct keys)
It sounds very different when playing one of the midi files in a dedicated midi player, then the timing is correct.

Have others experienced this as well?

[hvanmegen]

tested on a i7 6800K with GTX1080 & i9 12900K with RTX3080ti.. no stuttering or shuffling here..

but that's on Windows and Linux.. not macOS