Browser Hot Work - Youtube V4

Could you please explain:

Press Ctrl+Shift+Esc (Windows) or open Activity Monitor (Mac). Play a YouTube video. If CPU is >50%, you have a decoding heat issue. youtube v4 browser hot

The "hot" trend isn't just looking at screenshots; it's about . Modern power users are utilizing browser extensions (like Stylish, Stylus, or Tampermonkey) to forcibly regress the site's CSS to look like the 2013 version. Could you please explain: Press Ctrl+Shift+Esc (Windows) or