@mslyon I managed to reproduce the issue. I can confirm that loading a quiz causes a spike in CPU usage. Please bear with me because I have another question: why is that an issue? You mention that:
What do you mean by “the server dies”? In my understanding it’s perfectly fine if CPU usage goes to 100/200/400% for some time, as long as requests are correctly processed and we don’t exceed the available memory – in the latter case processes will be killed, which will definitely be an issue. But loading a quiz only affects CPU usage, and not memory, doesn’t it?