No, it's still comes in through the cable connection and for the desktop I am hardwired to their router.
The problem is almost certainly outside your home.
You probably are not consistently getting the band width you are paying for.
Cable systems share bandwidth between users and often of a lot of people are one line these things happen. You may also have a bandwidth hog in your neighborhood.
Comcast at Eagan will have this problem on occasions at weekends. When I was in Grand Forks, MIDCO were notorious for this problem.
At the lake where I now have fiber to the house, I never have this problem. As far as I'm concerned every home and business should have fiber to their location.
The first thing to do is to
check your speed.
Check it multiple times, especially when you are having interruptions to streaming.
Check your speed against what you are paying for.
If it is consistently slow, take one computer and connect it directly to the Net in case you have a bad router.
The above will likely tell you where your trouble is.