This obviously doesn’t work if its a live performance, but if you have the luxury of post production, its the cleanest result you’ll get with no frames dropped this gets really tricky when using another piece of realtime software like ableton you might consider rendering the audio and midi from your Ableton performance, and then bringing them both into touch to render your video with the realtime flag off. Of course if you want to make sure TD drops zero frames, rendering it offline is the move. I’d consider recording it all and then manually lining it up in post with premiere or similar. of course, all options will introduce some amount of latency. If you don’t want to use external hardware, Voicemeeter is a good option for sending it via a virtual audio card and piping it into touch. This can be acheived a variety of different ways, highest fidelity/low latency I’ve found is probably an audio card like the UAD Apollo’s console mixer. If you want it to be real time, you’ll need to pipe the audio into TD from ableton.