Thank you for your advice.I have done all the troubleshooting steps you suggested and the speed is improved to 120 seconds to print a test page and is still slow to print a document (around 5 minutes for a session of 5 pages)
But I think it is due to my computer, because the printer is fast and works perfectly with my another computer, a lenovo, with which the time to print a test page is only around 32 seconds.