I have also been having this problem for the past 2 months now, just wanted to throw around my 2 cents. I have tried 4 different web browsers, re-installed, uninstalled rollbacked, all that nonsense. No such luck. My wife's computer has no problem, and she runs on windows 7.
The only thing ive been able to slightly pin point is when I right click on the live stream video, and it shows the streamer version, I am able to watch it on version 3.11 but if it lists as version 3.22 It will freeze and crash. I can open the chat portion of livestream in a separate window and that part works just fine, but its just a certain version of the livestream player that is bringing me down. So far I havn't been able to find a way to lock it in at version 3.1. Hope this info can help somebody.