microsoft teams

I have tried everything to fix this reoccurring issue with mircosoft teams. Every time I have a microsoft teams call, it will go out for 10-15 seconds and will say poor network quality but I have run every internet speed test under the sun and they all say my internet is 'very fast'. I am sitting within 10 feet of my router and I take every single device off of wifi every time I take a call and I am still having issues. I am about one more teams call away from going to a different provider as this is very disruptive to my daily work. I have read every forum post and all of them say to direct message xfinity but to do that you have to post first. So this is my post to see if I can get through to someone who can actually help the problem.