In the app I'm building we are sending larger 12k sysex messages. I had to raise the buffer size accordingly here: https://github.com/InvisibleWrench/flutter_midi_command_windows/blob/9597f0738e5fffff0bae11194677080e1c4173ae/lib/windows_midi_device.dart#L23 I wonder if we should add a way to customize this, wdyt?