Hi @Waymusic. If you bind one of Scaler’s sections e.g. ‘C’ using the bind button on the right hand side, the chords from that pattern will be mapped to the white keys starting at C2. You should be able to trigger these easily with the pads on a MIDI controller, assuming the pads are sending the correct notes.
However to do this you will need to open the Scaler 2 GUI. It is a little concerning to hear you’re unable to do this without CPU issues. We have tested Scaler 2 iOS on a variety of iPads including a 4th gen iPad Air, as well as an M1 iPad Air and haven’t had any issues. So make sure you have updated to the latest version.
Which iOS host are you using e.g. AUM? There is another thread with users reporting sluggish behaviour on iOS hosts that we are investigating but have not been able to reproduce if you want to have a read through and see if this lines up with what you’re seeing.