Like some users after installing this extension the fan was overworked with noises. HOWEVER, on closer inspection the issue was likely caused by having the in extension adblocking feature turned on while another adblocker (e.g. uBO or Adguard) was already in use. Simply put, when it comes to - Youtube - adblocker, use either the one within this extension or uBO/AdGuard/Ghostery etc. but never both or more.