I did it for 2 hours, but I could've had it done in an hour. Depends on the thickness. I am not in a rush here. Plus, the device was like $65. I did it as an experiment.
What I got out of it last night was how tender it was. I could never get it that tender doing it the other way. Plus, if I shell out extra dough for a steak (Not a Top Round, we're talking Ribeyes, Filet Mignon, Waygu), I'd rather be sure it's the perfect temp than fuck it up.
I am interested in the Instant Pot, though.