It's not a question of where I live, it's a question of how many people are using the same wi fi and as soon as too many it stops working. I used to go on it after midnight to be sure, till the gamer moved in next door and it's hit and miss now. Don't expect me to understand the technicalities, but a tv expert told me that was the problem.
To be certain of getting on the internet I'd have to pay for my own private access, and I don't do enough on line to make that worthwhile.
Certainly not going to pay for something I'd only use a couple of hours or so a day. The wifi is good enough for what I do, as long as I can wait.
BTW, I'm not in Thailand and internet costs way more than what you are paying.