"If you genuinely have 5,000 users all starting a quiz at exactly the same time you are going to have to pay a LOT of money "
And you might have to pay a lot less if the users start the quiz spread over a 2 to 4 minute time frame. Setting up systems to do this is a specialist area and I recommend contacting a Moodle partner, as that is the sort of thing they do for a living.
And you might have to pay a lot less if the users start the quiz spread over a 2 to 4 minute time frame. Setting up systems to do this is a specialist area and I recommend contacting a Moodle partner, as that is the sort of thing they do for a living.