He must have entered /tool cpu-test but his picture shows just cpu maybe he hit tab or edited the picture
I tried the cpu-test and it did not work but I have found out that I can make 100% cpu by making a TCP bandwidth test from the router to the router itself but this is not a legitimate test but rather an overheating test ....
Is this a joke? So when my customers ask me - why the MikroTik routers do not work too often I will tell them - "Well they claimed they would work just to excite your minds. We will remove them now and replace them with Linux "