It speeds up YouTube by 50% by modified configs (including the removal of the annoying "Video paused. Continue watching?" popup).
These steps are required to tweak here!
Make sure you install an ad blocker extension like uBlock Origin or AdGuard so it will remove ads completely.
Just install Tampermonkey, or Violentmonkey and install these scripts here.
CPU Tamer (by AnimationFrame) - https://greasyfork.org/en/scripts/431573
Anti-Shorts Script - https://github.com/YukisCoffee/yt-anti-shorts/blob/main/anti-shorts.user.js
Bonus scripts to install (if you have a sluggish PC).
Hide VP9 support from YouTube - https://greasyfork.org/en/scripts/373685
Disable YouTube 60 FPS (Force 30 FPS) - https://greasyfork.org/en/scripts/23329
To improve performance even more, Just turn off "keep hovering to play" popup. Instructions here.
https://gist.github.com/matter-it-does/bc3acea114ef3962973de54fba57509a
