Hello! I was having this issue for awhile and it was really starting to make me pull my hair out. When transferring into Melodyne 4 in Ableton 10.1.3 often times Live would altogether crash. (was happening before 10.1.3) Especially if I was transferring to more than 1 instance of Melodyne at once. It got to where I couldn't reliably transfer an entire take in one go, I had to do it in sections and save in between, and I could not transfer to more than 2 instances at once. No good

So after poking around on Google and seeing some people with similar issues but no real solution I went looking through the settings. And the solution I found was to enable "detect audio after transfer" in settings>preferences>misc. Really simple solution but it's worked! Have been able to transfer to 4 instances for a whole take with no issues!

I'm guessing having Melodyne transfer the audio and detect it at the same time was too much for my system Which my computer isn't weak but it could be stronger. i5 7500, 8gb ram, ssd system drive.

So I don't know if this was affecting too many people but in case it was I just wanted to share my solution. Have a nice day yall!