2 minutes of cooking for reverse sear? In practice, a 3cm steak would probably need 20-25 minutes at 100C before sear. This model seems way off at this temp range, but seems closer for sous vide.
I tend to do something around 75-80c for an hour on a 3-4cm thick steak. The slower one goes, the easier it is to make up for errors in probe placement, multiple steaks, etc.