[sodapopcan]

Should be, though milage may vary, of course. I'm having trouble finding a better example but https://elixir-console-wye.herokuapp.com/ is made in LiveView. You can try it out and see what you get (I have no idea where it's deployed, it's a phoenixphrenzy.com winner and plenty more there to browse through). Its payloads are a bit larger than some typical responses I have in my personal apps and I'm seeing 1-2ms responses in Toronto, Canada (chrome devtools doesn't show greater precision than 0.001 for websocket requests).

[coryrc]

ms is milliseconds

[sodapopcan]

Yep, which is what I meant in my comment you're replying to (as per my statement that devtools only report to the 0.001). But as pointed out by jclem, I'm probably wrong about microsecond response times anyway. I'm very likely thinking about the MICROseconds I see in dev, which of course doesn't count :) But with the heroku link above, I am seeing as low as 1-3 MILLIseconds in Toronto, Canada.