You may get stacked by a bad beat once a session, but you'll be stacking people 2-3 times a session with the same hands. You can't avoid the former, it's simply not possible. If you are not making back this loss + interest when you DO win, then either you're still being struck by variance, or you're not maximising your winnings. You clearly need to have a look at your hand histories to check if it's the latter.