That's because AUv3 is an out of process plug-in architecture, with the performance overhead that that entails. See here for why that doesn't scale to serious

That's because AUv3 is an out of process plug-in architecture, with the performance overhead that that entails. See here for why that doesn't scale to serious productions with high track count: https://ardour.org/plugins-in-process.html https://ardour.org/plugins-in-process.html