As the title describes, every time I watch something on twitch.tv (livestreams, clips, vods, etc), or through their embedded player on other websites, Firefox begins to stutter every few seconds. This continues even after I have left twitch.tv or left the page with the embedded twitch player. This is most noticeable when scrolling through webpages (scrolling, scrolling, PAUSE, scrolling...) but also when clicking hyperlinks or clicking between Firefox tabs. Currently, to "fix" the issue I have to restart Firefox. It also doesn't seem to matter how long I have been browsing for. If I watch twitch content within the first few minutes of opening Firefox it still stutters.