Just posting this here as I reported during beta and have been able to reproduce it on 6.0.1. (It happens with any of the live instruments)
Live is rewired to SX,
Trying to send more than one live instrument midi from sx doesn't work here.
While one loop was playing my operator ok
When I tried to playback a drum pattern I recorded, certain notes didn't sound (Looking at the live device, I could see not all the notes were being received).
Also a few cpu spikes when changing operator presets. (cubase showing a warning message).
Thanks
Rewire Bug - Midi To Multiple Live Instruments (6.0.1)
Rewire Bug - Midi To Multiple Live Instruments (6.0.1)
MacBook MacOS Live 9.7.1 Max for Live Push Logic