For reference, this is an M1 Pro - the first run is consistently half speed so I’m guessing that’s some kind of scheduler adjustment:

    1 59.9
    2 109.1
    3 108.4
    4 109.1
    5 108.0
    6 109.3
    7 109.4
    8 110.5
    9 119.3
    10 123.9