[Pistos2]

Anecdata point: I had a lot of trouble setting up Nextcloud Talk with my own STUN & TURN servers. Even after I'd gotten that going, NCT video calls have been extremely unreliable, with it fully working only maybe 1 in 5 times, or worse. I still don't know why. Could be dependent on the kind of Internet each side is connected to (home network behind ISP router vs. coffee shop vs. corporate network with potential firewall, etc. etc.)

[alistproducer2]

Where are you hosting your turn server and what software are you using?

[Pistos2]

I'm using coturn for TURN and STUN, and they are on the same VPS that hosts the Nextcloud code, version 13. If you actually want to help me solve the problems, send me a DM on github (username Pistos), and I can give you more of the technical details.