We have spent at least 6 winters in Lo De Marcos and know exactly how reliable the Telmex internet is. Unless you have fiber to the house you are still susceptible to hard wire problems. I haven't been anywhere yet in Mexico that has fiber to the house. I'm a retired phone guy, I know a little about how all these systems work. Telmex can slow down to a snail pace if many users are on at the same time, it only has so much band width. I would hate for my sister to have issues that I have experienced before.
Here in U.S. we are at the wireless connection mercy, pretty reliable but times when it does slow down.
But like I said there is hope, a dependable fast internet connection being offered, for the prices I mentioned on previous post.
Thank you all for your advice.