I worry that someone didn't reveal that's how it is supposed to work. A lot of work was done by Intel to reduce power consumption when the CPU idles and this is one of them. Cut the clock rate when the cpu is idle.
My CPU keeps throdling in idle i have an i7 5820k thats cooled by Corsair h100i V2 Liquid cooler the CPU isnt overclocked bitte keeps throdling in idle almost immediately. I changed the thermal Paste anderen cleaned Out all the dust but it didnt Work is my Pump the issue?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic