I have a realtek RTL8723E network card. It connects for about 3 minutes, but then suddenly disconnects and then reconnects after about a minute. This really hinders my ability to use Ubuntu, as I want to learn to use it but without the internet it is basically pointless.
I know it's the correct driver, but maybe there is some package that magically fixes problems like this. A man can dream. Also, it isn't the router settings.