Via the streaming app it allows me to stream my xbox games but when I try and switch it to...

I'm also unable to hear or chat when in a party when I stream an xbox game on my desktop via the Xbox App; once I stop streaming - chat is restored.

I use it and have since launch. It’s a great feature allowing me to just turn on my Xbox and that in turn turns on my receiver, DirecTV box and TV. I use all streaming apps through the Xbox and it makes it super easy to switch between TV, streaming and games.

Really disappointed if this is removed from the Series X.

I too am experiencing issues streaming to my windows 10 PC. I am on xbox app version 15.18.4004.00000 and i can connect to my console but when i try to stream games it tells me that streaming is disabled on my console when all settings are checked

Could it be so slow because I'm using the XBONEX via streaming? The W10 Xbox App was minimized for a while and when I restored it, I briefly saw a download rate of about 80MBps. When I restored the app the speed went back down to 1.5MBps.

My internal network is all wired and 1GBps, so that's definitely not the issue. Could it be the XBOX app is the root cause for this? Can't see why because the streaming rate is 3MBps, but it does seem odd. When streaming games via Xbox app, I get in excess
of 20MBps though. Microsoft?

I would definitely stop all streaming services and just download the game and then confirm the download speed increase/decrease for the results minus the streaming.

I think you'd need to reach out to YouTube and ask if they can add a YouTube streaming app. Xbox allows streaming to Twitch via the Twitch, so I'd imagine they'd be OK with streaming to YouTube via a YouTube app as well. I doubt Microsoft would go through
the effort to make it happen themselves, as they already have Mixer built in.