@Straticah Hi Julian, thank you for your kind offer. When we get to that stage, I will keep you in mind. In the mean time, yes please do send some of your work.
@toxonic you can try running the compilation with the nproc --ignore=2 flag. This will run the compile process with all cores - 2. This way you can get some speed boost and it should still work.
@MikeB I think the Preset system in hise will always kill all the notes when a preset is called, maybe you need to create your own preset system instead of a custom sequencer.