Massive DirectTV Streaming buffering???

How come when I'm using my AT&T hotspot to stream DirectTV Streaming it is constantly buffering. Yet when watching YouTube or Peacock or HuLu or any other streaming service it never buffers? NEVER! Sometime the DirectTV will be playing for ten to fifteen minutes and then buffer, come back on for a few minutes and then go out again with the message that "Something went wrong, try again later!"....This has never ever happened with other streaming services. 

 Interestingly, and not to be political, but iot happens way more often while watching Fox News. I watch Fox News, CNN and MSNBC, and FN buffers much more often.