Latency is as good as you can do when doing peer to peer calls, the trade off is bandwidth (and CPU, but mostly bandwidth).

Latency and non-terminated encryption (end-to-end, not point-to-point) is great, and for calls with 3 or fewer peers the stability is fine. More peers than that and you probably want a media router in the mix, which adds some latency (all the calls have to route through a central server) and the server typically has done termination of the encrypted call streams as it does its routing.