Hello, I know this post is really old, but I'm having exactly the same problem and I don't have ESET installed.
I don't know much about this issue, but I currently have Windows 8.1 for x64- based Systems (KB2957689) and youtube is fine for me. I really only have problems in other websites (in fact, all of them except youtube).
I hope a solution appears soon
Sorry for my possible incorrect english
Thank you