xbox one download speed slow and someone is streaming at the same time and thier hulu stream ...

Your xbox will have slow downloading speeds if someone is streaming something on the same network. Make sure no-one is watching Netflix or something and your speeds will be much faster.

Hey there Bigs XXL,

Are you seeing this when playing another game online or using a streaming service like Netflix or Hulu? The download speeds prioritize based on what you're doing on the console during the download. So if you're playing online or watching Netflix, your download
speeds will vary due to the console trying to ensure you have a lag free experience in multiplayer.
This guide can also help with slow speed troubleshooting.

I'm having the same issue. I can't start a video on Xbox Fitness because it tells me I have an "internet connection error." I can stream Hulu, Netflix and play online games just fine. And my speed test is way above the recommended limits (support.xbox.com/.../slow-performance-solution).

This appears to be an issue with Xbox Fitness.

trouble shooting never really helps all the time and its server from xbox servers and my problem with the streaming on xbox and my xbox app when i use it the game doesnt run all that well with xbox app streaming and buffers or lag spike and it say network
is slow even no i have high speed network with wire im using with 940mph speed and when try streaming on my xbox with out xbox app it still does same thing when using any other streaming stuff. Like server with xbox doesnt work on games that have higher 4k

I've had this issue and have been unable to stream from xbox one at all. My friend was having the same issue when he started using it and figured out the problem for him was that his internet speed was too slow. He upgraded speeds and now streams fine.
I'm trying to find the best price on an upgrade, but if any of you get the chance, try streaming again from a faster network. It it works, then maybe that can confirm that's a potential solution.