I bought a new computer a few months ago, and almost instantly I noticed that video playback had a problem. I installed Firefox, but if I replayed a video, the audio was noticeably off from the video. The problem is resolved if I tug on the progress bar, but any playback on Youtube is affected. I do not have any extensions on this browser, and the problem does not present if I use Edge, or the sort. I can not say if playback is affected on other websites, as I do not have that much need of my computer beyond the basics. I would rather not change browsers, but I have not discovered any suggestions of related problems that relate to my computer.