The 3 seconds of latency is writing a bitmap image from the phone to the smart glasses over BLE. It's very fast to send text, but slow to send bitmaps.

For text, everything is fast - the AugmentOS servers introduce <350ms round trip latency in most places/countries.

In next-generation glasses, this will be a lot faster because of better bitmaps handling, BMP encoding schemes, and also pre-loading of BMPs.