While most, if not all, that has been diagnosed already ITT is probably applicable, let's just back up a little
Quote:
Originally Posted by minamo99
I was crushing nl2 zoom quite easily, grinding my starting roll from 50 to a 110 in a week.
What are you defining as "crushing quite easily"? How many hands? What was your win rate? The bigger your win rate, the smaller the sample size, and the more likely you just ran hot.
E.g. a $60 profit = 3,000 big blinds. For the sake of putting a number on it, let's just say you ran at 15bb/100 — that's 20k hands, and at 4 tables, that's 20-25 hours, a reasonable but not excessive amount in a week. But it's not exactly a volume to make your win rate definitely accurate. More volume means lower winrate and less crushing, and higher win rate means lower volume, and more uncertainty about the accuracy of your win rate.
In a post linked recently, someone else goes through the numbers in more detail
here about how a touch of good luck in a few hands can make a massive difference, how "narrowly winning", or even "losing", can suddenly leap to "crushing" because of variance, because you get the run of the cards.
If you're struggling so much at a level, then maybe first make sure you're truly beating the level below it. A week's play might not be enough. While there's nothing wrong with moving up levels aggressively when you're winning, remember that if it all goes wrong then there's nothing wrong with moving back down again to make sure you're actually as profitable as you think you are. Trying again at 2NL and making it $150 profit in, say, 50k hands, or $300 in 100k, would be the same win rate as considered above, but far more likely to be accurate. If your win rate dropped significantly in a larger sample than it gives you more things to look at to improve the basics of your game.