So my internet speed is 12 mbps, the xbox network check is good, and NAT is open.
I can play online games with no problem as well as stream Youtube and HBO Go uninterrupted in HD.
The problem is that certain apps including ESPN, Netflix, and Amazon Video won't ever stream in HD. Additionally, if I try watch game previews or other media from the home screen it is continuously having to stop and buffer. Game updates and downloadable add-ons also seem very slow to download as well.
So what is the deal here? I could understand there being a network issue if nothing worked right but the fact some apps stream so well yet others don't baffles me. It's also strange that I can access Netflix, Amazon Prime and ESPN 360 on my macbook and stream hd no problem.