Personally, I have never used an Antminer for Bitcoin mining, but I have ever mined using a GPU installed on my personal computer or desktop. The most common headaches I encountered were power outages and unstable internet connection issues, or even frequent disconnections. I encountered these issues frequently at the time, and even if I were still mining now, I think I would still experience both of these issues. I don't know if the same issues apply abroad, but this is a common occurrence in my country, even though my internet and electricity providers are state-owned enterprises, but it doesn't seem to be as good as it should be.This might not be specific to your question, but I think it would be relevant if I were using an Antminer for Bitcoin mining here.

In addition, rainy weather accompanied by lightning is also a challenge for me when mining, because when that happens, I have to turn off the modem that I have, because several times I have experienced incidents of being struck by lightning on my modem, which at that time made me anxious.