I have been giving a lot of remote trainings recently, which provides a post hoc justification of my somewhat excessive wireless set up. I have this router: https://www.cnet.com/reviews/d-link-dir-879-ac1900-exo-wi-fi-router-review/
It is a very good router, but it didn’t solve some of the annoying internet “pauses” I kept getting. The problem was with the other side of the “wireless” conversation, my USB wireless adapter. Despite trying multiple brands, those just seem to need to reset every once in a while. Instead, I switched to this PCI-e internal wireless adapter, though you’ll notice it has an external attenna: https://www.asus.com/us/Networking/PCEAC68/
Since then, my wireless internet has been rock solid. Though, your mileage may vary based on your house and provider. While there is a bathroom inbetween my router and my adapter, it is still only about 15 feet.