Interesting indeed! Do you normally experience high latencies >1s from your connection or is copilot more of an outlier? I have noticed that when I travel to the midwest I will get latencies around 70 to 90 ms rather than my current 30 ms, but It's not something I really notice too much, though that tends to be in major cities.
Most people in the midwest likely have cable or DSL internet which adds 30-50ms~ of latency out of the gate. My high speed business fiber connection to my apartment gets 28ms to github.com and 36ms to api.github.com, so it's probably not that, though it depends on where the Copilot datacenters are.
