Anomalous delay times below 150 ms in MIDI Fire on Mac

I was having some anomalous behavior in a combination MDP2 and SB layout using delays.

Seems that the SB in the Mac MIDI Fire seems to start misbehaving with send delays under 150 ms. Delays may drop to zero, and messages may get duplicated.

I did some testing with the iOS stand alone SB on an iPad, and while the delay times may stutter a little more than on the Mac, they were solid down to 75 ms where I stopped testing.



This is the test script used.

If Load
 Define Delay +D140 # change as needed
End

If M0 == F0 58 15
 Ass I2 = 1
 If M3 != 0
   Snd F0 58 16 I2 F7 +I Delay
 End
End

If M0 == F0 58 16
 If I2 < 7F
   Math I2 = I2 + 1
   Snd F0 58 16 I2 F7 +I Delay
 End
End
Mac testing was with MIDI Fire 2.3 & Midi Monitor

Ipad testing with SB V 1.10 and MDP2 midi log