Disable YouTube 60 FPS (Force 30 FPS)
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!
s0urce.io Bot Typer
This script uses a bot to store words that it has already seen you type correctly, then it re-inputs that word again when you stumble upon it. No need to go into the DevTools Console.