I used to play at UB and had to walk away from it when I could never win against a 2, 3, or 4 outer. Often I'd lose to some ridiculous runner runner scenario too. At first, I made a good return as most people are trying to give their money away. But then it became such a grind that I had to walk away. If I stayed away from confrontations I'd do well. If I got all the money on the table with a 80% chance or better, I could not win. Eventually you have to give up on it.

Sadly, I switched to pokerstars and for the first 275 games or so I made a nice return again. Now I have people calling me with no reason until the end and hitting runner runner to win. It's exactly how it happened at UB. I struggle to get a positive return for the last 50 games or so because I can't win against a 2 outer, let alone a draw or something. 50 games is a bit much to call variance.