Nodes with the same performance show different profitability. It seems to be based on randomness, and there are nodes that cannot be mined or mined in rare cases even though the settings are the same.
Difficulty has also increased to 31, but now it is staying at 22-26. And a certain sighash has taken over all the amount mined over 60% in the last 10 days. We need a patch for the CreditCoin network right now.