To troubleshoot why your printer is not printing at the expected output per minute, please consider the following steps:

1. Check for frequent paper jams and clear as needed.
2. Check whether the printer is set to correct paper size, type, and paper tray.
3. Check whether the printer is properly aligned.
4. Check whether all the cables and consumables are properly connected.
5. Check whether the target print density or ink coverage is set to appropriate level.
6. Check whether the printer driver is properly installed and functioning.
7. Check if print jobs are stuck in the print queue.