Might help you out. https://www.cnet.com/news/how-we-boosted-the-wi-fi-in-the-cnet-smart-home/
I am using AT&T as my internet provider with their router, which they say is the best one offered. Anyhow, my situation is two-fold. First off, my router is in my office while my wife's office is on the other side of our house. She gets a decent WiFi signal which does not drop but I was wondering if she was getting a stronger signal if it would speed up her computer. She has basically a new Lenovo computer running Windows 10 with plenty of hard drive space left on it.
My second question or situation is that when I am listening to music on my LG Ultimate cell phone as soon as I get out of our house the signal dies and the app stops working. Again, I was wondering that if I extended my WiFi signal if that would keep me from losing my music app.