The Instant Pot inner chamber is really small. You don't have a lot of surface area, so you will need to cook the beef for a long time, in multiple batches. The surface will start to get scorched quickly, so you will also have to wash it multiple times in between batches. I like to do one batch in the Instant Pot and at the same time use my large 12 inch skillet to cook more of the beef at the same time on the stove. This really helps to make it faster. Braising the beef in the Instant Pot is my main objective anyway. If I cooked the whole thing on the stove, the braising time would be about 2 hours, plus all the other time for prepping and sauteing.