Question Everytime my tv gets turned on my internet slows down considerably


Whenever anyone uses this tv in my house the internet slows down to the point where a google search takes a while to load. It effects everything connected to the internet like computers, phones, etc. The TV is a Samsung Series 7. I do use a wifi extender:
I am wondering how I could fix this and if the extenders are cause the issue. Thank you.
My samsung TV is very chatty. It is communicating with many of the built-in APP providers for advertising.
I use PI-Hole so I can see all the DNS traffic it generates.