If at all possible you should run an Ethernet cable to connect your Smart TV especially if it is not very close to the Wi-Fi access point. Typically, the Wi-Fi card in your Smart TV is not that great. There is usually an Ethernet jack on your Smart TV that would allow you to plug in a network cable. If you are having trouble with your Smart TV accessing the internet you may want to try using a cable as it will likely fix the issue. If you have a gaming console you may want to consider running a cable to it as well.