In Ableton Live (both Windows and macOS), when using VST3 instruments, program changes are slower than expected. This seems to be the case for most VST3 plug-ins. The slowness appears to be more noticeable for plug-ins with large numbers of automatable parameters, including modwave native. On macOS, we suggest using the AU version of modwave native as a workaround. Ableton is aware of this issue.