What "techniques"? Audio/video over high-latency connection is not a computer game where there all all kinds of latency compensation techniques - several meeting participants start speaking at the same time, realize they do only after RTT, stop, then awkwardly wait for a moment and repeat hoping for no "collision", rinse-repeat. Everyone who often has meetings with participants connecting from different continents knows what I'm talking about. But you can have this in beautiful high-definition "smooth" 4K if bandwidth is high enough, yes.