After some research, I discovered that fixing this problem is going to take a pretty serious overhaul. I’ve put it on the list, but not sure when it will happen. In the meantime, I’d like to find you a workaround.
Please let me know what Ableton info you actually need TouchDesigner to track in your Live set, and I’ll try to help you find a solution. What we need to do is keep your song info to a reasonable size.
There is also a new post here that apparently helps with some Mac issues, you might want to check it out: TDAbleton Connection problem over Ethernet LAN Mac to Mac