I'm running a Moodle site on a shared hosting plan. Last week, when I tried to do a quiz (random questions) with 12 students, the site couldn't handle this. When I tried it with 5 students, it worked fine. Has this something to do with PHP memory_limit? I've already set this to 512MB.
Or could this rather be a cache problem? I have no idea how cache works. When I log in as a teacher, you can find the results in the file added.
Thank you for your help.