I followed this guide to watch WidevineCDM pages (like netflix, amazon video, ...) on raspbian, which basically downgraded the pre-installed chromium.
It works fine and I can watch those streaming sites. But I noticed that youtube isn't as smooth as in the newer version, where I could watch 720p after a short buffering very well (didn't try 1080p). Now with the older version I can only watch 480p content smoothly.
As you can see it's meant as a streaming device on my tv and I am new to this.
How can I install a second (newer/newest) version of chromium for watching youtube?