I've been having fun with random BPM fluctuations coming from Numerology through an IAC Bus. Amazing stuff. Only downside is it appears PulseComb does not like this. SIgnal will drop unexpectedly, and can only be restored by bypassing the contraption and reconnecting it.
No biggie, but it seems to be a thing! I've made this happen with several patches. Bug stops happening as soon as I disable BPM modulation.