I noticed that my CSV export is capped at 15,000 rows. Is there a way to bypass this limit?
Unfortunately there is not a bypass for this. The best way to workaround this would be to try to lessen the amount of rows on the worksheet, or writing this back to your warehouse as a dataset and then export it from there!
Many users de duplicate rows by adding them to a level and then collapsing the base columns to export.