You need to take down 1, 2, and 3 players at the same time. When you first get the chance to take down 3 players with one hand (3 players go all-in on the same play), make sure you also go all-in. Then, you'll see your % of winning the hand while the cards turn, up to the river.
When you know you will lose, press start and quit. Do it BEFORE the check mark saying who won. Then, reload the game, and if you're lucky, players will still go all-in on the same turn, no matter what hands they get. This will happen if a lot of players have small bankrolls.
Good luck !