I was experiencing playback issues such as frozen videos on Youtube and other websites. Searching the internet I think I found a solution. There is a video on YouTube that explains how to solve it step by step. Here is the information: Youtube Channel: BrenTech Video name: How to Fix YouTube playback issues in Mozilla Firefox Link: https://youtu.be/0fiVciCs8zU I hope Mozilla Firefox gets hands on the matter. Because I see that the problem has been around for a long time: Like in this closed post: https://support.mozilla.org/es/questions/1411381 and it seems like no one knows anything about it. I hope this information helps Mozilla Firefox improve and offer a better experience to its users. Thanks.