That’s interesting Paul…
I assume this means that higher notes will convert faster than lower notes? However, it doesn’t seem noticeable to me, so it must be a very small effect. Can you be more specific? For example, how much faster will C5 convert than C3?
I’ve noted that MG2 defaults to a buffer of 256, but also found that it can be reduced to 128 in a couple of ways:
if you open AUM and set the buffer there to 128, then add MG2 (included in the inter-app audio list) in the chain after system audio. There is no need to set any output slot. MG2 will now be set to a buffer of 128. You can either play inside MG2 with this setting, or outside synths. They will be set to the same buffer size. You can even close AUM and the 128 buffer setting will be retained in MG2.
Open Audiobus and set the buffer size to 128. First open a synth in Audiobus, then open MG2. MG2 will be set with a buffer of 128. On my iPad I can have a couple of synths open in Audiobus with this setting before getting any crackling - but just one is safest.
Getting the buffer size down reduces latency to the minimum and makes your playing experience far more satisfying, so for me it’s worth sacrificing having lots of synths/apps open to be able to use it. Maybe on a more modern iPad with more powerful CPU (mine is a 2016 iPad Mini 5) you could have more synths open with a 128 buffer setting, I’m not sure.