Yeah, I would recommend going up to 24 hours at 134°F in a sous vide container for a rare tender roast. Spices and herbs I love to add: Thyme, Paprika, Cayenne, Pepper, Oregano, Mustard, Garlic, Parsely, Cajun spices, Fajita spices. The roast is then seared in a hot cast-iron pan for 1 minute on each side to get a nice caramelized crust.