Cheap Cities in Mexico & South America with Fastest Wifi

Hi Guys,
I’m planning out my next stops after leaving Medellin, Colombia soon where I can hunker down and get some work done with fast wifi and cheap living. Will be in Mexico first so starting a look there but wondering if coming back down to South America might make more sense?
My main concerns are budget and fast enough wifi for me to work from home. Other considerations are some nomad community (ideally also some English speaking expats as my Spanish is basic) and warm enough weather.
Thanks in advance!

And here’s that same filter query with a nomad community: https://nomadlist.com/mild-or-warm-affordable-cities-in-latin-america-with-fast-internet-and-many-nomads-now

I’m in Cozumel right now. Cheap airbnbs with good wifi around.