UPDATE: BROKEN FOR NOW WILL FIX WHEN I CAN

• Makes the fullscreen instant

• Disables the scroll while in fullscreen feature

The limitation right now is that it doesn't support age restricted videos unless you install this aswell

https://greasyfork.org/en/scripts/423851-simple-youtube-age-restriction-bypass

It also does not automatically set the video to high resolutions but that should be doable soon

for now install a script that does it or another simple extension for firefox or chrome.

Only tested with firefox and chrome in tampermonkey.