That's really bad luck, chaos druids are easily over 150k an hour, depending on your stats of course.
I'll give you a trial once next version goes live that fixes the issue the user below mentioned.
Another user has informed me of the same issue, the script is designed so that when there is less than a few minutes left till the next break it will run to bank to avoid attempting to break in combat, this is mainly for breaking whilst botting in Edgeville as the druids there are aggressive. Apparently this feature is working just fine for some, but causing issues for others. I just pushed an update that allows the user to disable this feature which will fix the issue you are experiencing. Once the next version is live I will give you another trial.