Well, I hope you had a good one and returned fresh to release those binaries
Further testing deemed that if I use both pulse channels at the same time, there's VERY SERIOUS lagging in the MIDI signal. Any pulse with wav sounds OK, any pulse with noise sounds OK, any pulse with wav AND noise sounds OK, but whenever both pulse channels are on, mGB goes down to the toilet.
I recorded a sound example for you.
In it, you hear one pulse channel, then the other, then the wave and then the noise.
Then I play a pulse, add the wave then add the noise. Remove one pulse, then add the other...
And for the end, I add both pulses to the combo.... and hear what happens. The very last part is just the two pulse channels playing together, nothing else:
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The only "effect" this has on is pitch bending. This is not a PC, soundcard or PC software failure.