Greasy Fork is available in English.
Tells YouTube that your browser only supports videos at 30FPS or less, which switches all 60FPS videos to 30FPS and allows old computers to watch high-resolution videos without stutter!
< Відгуки до Disable YouTube 60 FPS (Force 30 FPS)
Works flawlessly on 4-year old laptop
This works flawlessly on the 4 year old dell laptop from a work auction. My apartment just upgraded its wireless, and this script lets me watch HD videos without dropping most of the frames.