[orestis]

Huh, back when we were developing the interactive Timeline at https://www.edmstudio.com/portfolio/moad/ , we did something similar for the artistic effect: various speech bubbles floating across screens.

The way we approached was that each screen was drawing everything, but offset relative to the physical location, and to animate everything synchronously, one machine was continuously broadcasting UDP packets with just IDs and positions, essentially driving everything. There was some fancy code for failover (there was no central server) plus ability to interact with the speech bubbles (can't recall the details).

We did something similar many times and broadcasting positions with UDP always worked out fine, with a big assumption: a reliable wired local network :)