Wireless wifi adapters keep disconnecting and that’s why I prefer using a wired connection. Because that’s how you get fast internet. It also never disconnects like the wireless adapter. You have also mentioned that you felt that your adapter is hot, that’s maybe because your adapter is old and couldn’t manage the load of the internet.
I would suggest you go for a wired internet connection for lifetime relief. But if you can’t, change your adapter and buy some good quality adapter. Do read reviews before buying any adapter because that’s how you will find out a good one. Contact your friends to find out what they are using because it will also help you. You can also visit this page for more information.