Where are you getting an Urbit ID in 3 minutes? I am not super familiar with Urbit. But my understanding is that even getting a temporary Urbit ID (a commet) takes hours.
I just booted with a new temporary ID and it took 50 seconds to generate the cryptographic key. After 3-4 minutes, Urbit had bootstrapped itself and was accessible over HTTP.
You can try with these commands, using Mac in this example:
mkdir urbit
cd urbit
curl -JLO https://urbit.org/install/mac/latest
tar zxvf ./darwin.tgz --strip=1
./urbit -c mycomet
Oh cool. I didn't actually try it myself, since I read in the docs that it would take a long time. Good to see it's quick. Urbit looks like a really interesting system with great design underpinnings and philosophy.
You can try with these commands, using Mac in this example: