I can't connect an ethernet cable to my computer directly, because the router is across my house. I know wi-fi isn't very good for gaming, but it's all I have at the moment. I recently found a powerline adapter, and was wondering if it was good enough for gaming in large and small servers (GTAV, CS:GO, TESO, etc.) Here's a link to it:
http://www.newegg.com/Product/Product.aspx?Item=N82E16833704165
http://www.newegg.com/Product/Product.aspx?Item=N82E16833704165