Sequence breaks on excessive tempo changes

SDK Bug Reports
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#1

Mac SDK 1.12.3

In our game Grand Tour Legends we have a ratchet clicking sound effect playing when you're not pedalling - its trigger frequency based on the speed you're going. We tried using playdate.sound.sequence to get better timing resolution for this effect, but met with some problems:

  1. the audio engine plays garbage if a Sample is shorter than the duration of a note (which varies with tempo)
  2. we modulate the sequence tempo every frame in a very wide range, after a few seconds the sequence stops playing.
function self:startTicks()
    local inst = snd.instrument.new()
    for i = 1, kTickSamples do
        local sample = snd.sample.new('audio/tick_' .. i)
        local s = snd.synth.new(sample)
        inst:addVoice(s, i)
    end

    local track = snd.track.new()
    track:setInstrument(inst)
    for i = 1, kTickSamples do
        track:addNote(i, i, 1, 100)
    end

    self.tickChannel = snd.channel.new()
    self.tickChannel:addSource(inst)

    self.tickSequence = snd.sequence.new()
    self.tickSequence:addTrack(track)
    self.tickSequence:setLoops(0, 6)
    self.tickSequence:setTempo(10)
    self.tickSequence:play()
end

function self:setTickSpeed(speed)
    self.tickSequence:setTempo(speed)
end
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