Problems with YouTube, does anyone have a solution?

Normally, I do not need help in this regard, in which case I'm at the end of my latin. I have an older laptop here, but the hardware is still very well equipped. My problem is that in the browser no playback of Youtube videos in good is possible. The absolute maximum is 360p, but then the video stops constantly and the sound crackles. I thought first, maybe it is a bit too old, but then I have other sites like Dailymotion, etc. Tried, it all works in 720p, and without problems. Netflix works great too. The laptop also plays blurays without complaining. Only on Youtube these problems occur. And I have no idea what that could be… Maybe someone knows a solution there. There's an app for Windows 10 called myTube, because it works perfectly, but that's not great from the user interface. I would like to use YouTube in the browser…

The problem is here on YouTube. I have a relatively new laptop (not even 1 year old) and I have these problems here and there.