@
arihant2301
Yes, It takes too much time, because there is one question on one page and every question is saving in database which takes too much time.
So you can use in-course quiz.
refer:
http://prntscr.com/o6yi4d
Please set in-course quiz in wp-admin->LMS->Settings->Enable in-course quiz and set the number of questions per page.
It will load fastly because all the question on the page will load at a same time.