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I'm having similar issues on a fairly modern laptop with i7-7700hq and GTX1050. After a few minutes of watching YouTube, it gets all jerky and not smooth. I'm g

I'm having similar issues on a fairly modern laptop with i7-7700hq and GTX1050. After a few minutes of watching YouTube, it gets all jerky and not smooth. I'm guessing something is throttling, though video playback isn't taking a high percentage of either the CPU or the GPU. I tried forcing the builtin Intel GPU on firefox.exe, that didn't change anything.

voltagex_ 8y ago
See if the video codec is shown in "Stats for Nerds". Perhaps hardware decoding for either webm or h264 isn't enabled.
- cpeterso 8y ago
  YouTube prefers VP9, when available. You can try disabling VP9 in Firefox by setting the about:config pref "media.mediasource.webm.enabled" = false. Depending on your GPU, Firefox may be able to decode H.264 using a hardware decoder. This YouTube page will show which codecs are currently enabled in your browser: https://www.youtube.com/html5 https://www.youtube.com/html5