I've been trying to find a place to live where my savings would last for a long time. I found this site: Cheapest Countries in Asia. It says Indonesia is the cheapest. I believe this list, because at least Thailand definitely really is three times cheaper than Japan.
So now I have a list of cheap places. The next piece in this puzzle would be to discover which places have good Internet connectivity. Here are SpeedTest results for Indonesia. That shows some places do have nice speeds, but it says nothing about reliability. Doesn't really matter if it's broadband speed, if it only works every other day.
The search continues.