Time and again I see posts here complaining about low speed on Mikrotik routers. A lot of these reports come from people that don't know we shouldn't run the test on the device being tested, due to CPU constraints.
So, I had an idea: Why not insert a small warning on the test itself? Something like "I know I should not use this test on the devices being analyzed". Or something on these lines. Put it on the top of the page, just above the first option.
Make all the options grayed out, until the user clicks on the warning. Make this warning remember the box ticked, so this is a one time action. It would be like enabling the test.
It is easy to implement, doesn't change the code, and would cut back on the messages complaining about a bad speed test.