Sometimes the lights start flickering, and it happens 3 times within 15 minutes.

You're being unnecessarily sarcastic. I used to live in a village and played without a UPS (and the internet was only through a mobile phone). My neighbors had a sawmill, a grinder, and a welding machine. The sawmill... well, it ran almost from morning till evening. It was impossible to play properly. In general, network problems were a nightmare. There were various types of disconnects, sometimes for no reason, sometimes before important battles, and the worst was when it happened after them. When you couldn't repeat the success of the first attempt.

So, the issue of disconnects is quite complex...