Anyone who has been doing performance work should have known this. The tools to adjust things like core affinity and where interrupts are handled have been available in Linux and Windows for a long time. These effects were present in 1980s mainframes. DUH.
Oh PLEASE do not use duct tape. Have you not noticed the goo it leaves on everything? If you must use tape, use Gaffers tape, it's designed not to leave goo behind.
And nobody ever drops calls in European cities? Bah. Any attempt to compare that uses individual experiences is meaningless. You need a large sample. Take a statistics class, at least enough of one to fool people who have not.