I just went to watch the Burnout Paradise stream and on Safari it keeps playing about 10-30 seconds of video live and then skipping back to the start of the stream. Refreshing the page will fix it for another 10-30 seconds but it jumps back again eventually. My Safari version is Version 11.1 (13605.1.23.1). I have all plugins disabled for Giant Bomb so it isn't Ghostery or anything like that breaking it.
Someone else also mentioned it happening on their iPad so it could be a Safari issue.
I tested the stream on Chrome and it was fine so it isn't my internet connection. It seems like whatever player is used for Safari (it appears to be different than the one on Chrome?) is borked right now.