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Playing videos on YouTube and on twitch causes excessive overheating and fans always at maximum

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When I watch a video on twitch or sometimes on youtube, after a while the computer heats up a lot and the fan starts spinning faster than usual. This only happens to me on Firefox and rarely on Chrome (on safari no). It happens on the MacBook Air 2018

When I watch a video on twitch or sometimes on youtube, after a while the computer heats up a lot and the fan starts spinning faster than usual. This only happens to me on Firefox and rarely on Chrome (on safari no). It happens on the MacBook Air 2018

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I have a MacBook Pro 2017 and while using Firefox... the same occurs to me as well. When viewing YT or Twitch, the computer heats up and fans spin. I do NOT have the issue while using Safari. I want to continue to use Firefox, but may switch back to Safari until issue resolved.

Ezalaki modifié na Jason Hansen