Could you use tor to establish a better realtime link using a different protocol like Veilid while maintaining the relative anonymity and security?
edit: https://veilid.com/
Added link for clarity. Seems like you could get more or less realtime, udp streaming, full duplex communication . Once you have the first part of that built, then adding things like voip or video calls or what have you becomes a lot easier.
The problem is the UDP packets from the application will ultimately be in a TCP wrapper over tor. Which will add even more latency.
I know you can set up mumble over Tor but it's going to have the same latency drawbacks.
Another commenter noted the ability to configure only 1 hop instead of the standard 3. I wonder how much latency would be gained back. I want to play around with this.