Hey there Lars,
Thanks for getting back to me, but I have checked both settings, and neither of them resolves the issue. So to be more clear:
Cubasis will incorreclty play multiple keys only for certain AU instruments. So if I load Synthmaster One, iSem, BeatHawk, and AudioLayer into the same project, there are no issues with SM1 or iSem, but BeatHawk and AudioLayer play multiple keys, up and down the keyboard. If I load any/all of these instruments into any other IOS DAW, I have no problems with any of them, so far only BeatHawk and AudioLayer when used with Cubasis.
Actually, I was just trying this with a physical keyboard, and when I load AudioLayer into a project on its own and show the Cubasis keyboard on the screen, when I play C1 on the keyboard, it shows me playing C1. When I play C#1, it shows me playing D1, doesn’t play the note associated with C#1 but instead plays the note associated with D1, and C#1 isn’t shown as being played at all. Playing D1 plays the correct note and shows D1 as being played. D#1 seems to be correct as well. Playing E1 shows F1 as being played and also plays the note associated with F1, while not showing E1 being played in Cubasis. F#1 and A1 also plays incorrectly, and this pattern goes all the way up or further down the keyboard range.
I can replicate this very easily, is there a way I can capture this and send the information along?