Check your Flash settings (firstly make sure its the current version). You want to clear any existing data. I also like to have the local storage settings to max for T11.

This could be a problem in your browser settings, depending on which browser. Many people have good success with Chrome. If you haven't tried another browser (especially if you are using IExplorer) you might want to try that.

Just to let you know, I wound up upgrading my wifi on my laptop for better connectivity, what bit-rate do you get?

And some things to try also, reset your router, check your fire-wall, and close everything else that's running.